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How do you subtract improper fractions with different denomnator? - Answers

Convert both fractions into equivalent fractions having the same denominator. The value of this common denominator can be obtained by multiplying together the original denominators or there may be a Lowest Common Multiple that can be used. EXAMPLE: 4/5 - 3/7 : The common denominator is 5 x 7 = 35 4/5 = 28/35 : 5 divides into 35 seven times, so the numerator and denominator have both been multiplied by 7 to produce an equivalent fraction. 3/7 = 15/35 : As above, but in this case 7 divides into 35 five times, so 5 has been used as the multiplier. 28/35 - 15/35 = 13/35 : If the fraction could be simplified then at this stage this would be done. In practice, the above stages would be merged so that the calculation becomes :- 4/5 - 3/7 = (7x4) - (5x3) ÷ 35 = (28-15)/35 = 13/35



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How do you subtract improper fractions with different denomnator? - Answers

https://math.answers.com/math-and-arithmetic/How_do_you_subtract_improper_fractions_with_different_denomnator

Convert both fractions into equivalent fractions having the same denominator. The value of this common denominator can be obtained by multiplying together the original denominators or there may be a Lowest Common Multiple that can be used. EXAMPLE: 4/5 - 3/7 : The common denominator is 5 x 7 = 35 4/5 = 28/35 : 5 divides into 35 seven times, so the numerator and denominator have both been multiplied by 7 to produce an equivalent fraction. 3/7 = 15/35 : As above, but in this case 7 divides into 35 five times, so 5 has been used as the multiplier. 28/35 - 15/35 = 13/35 : If the fraction could be simplified then at this stage this would be done. In practice, the above stages would be merged so that the calculation becomes :- 4/5 - 3/7 = (7x4) - (5x3) ÷ 35 = (28-15)/35 = 13/35



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https://math.answers.com/math-and-arithmetic/How_do_you_subtract_improper_fractions_with_different_denomnator

How do you subtract improper fractions with different denomnator? - Answers

Convert both fractions into equivalent fractions having the same denominator. The value of this common denominator can be obtained by multiplying together the original denominators or there may be a Lowest Common Multiple that can be used. EXAMPLE: 4/5 - 3/7 : The common denominator is 5 x 7 = 35 4/5 = 28/35 : 5 divides into 35 seven times, so the numerator and denominator have both been multiplied by 7 to produce an equivalent fraction. 3/7 = 15/35 : As above, but in this case 7 divides into 35 five times, so 5 has been used as the multiplier. 28/35 - 15/35 = 13/35 : If the fraction could be simplified then at this stage this would be done. In practice, the above stages would be merged so that the calculation becomes :- 4/5 - 3/7 = (7x4) - (5x3) ÷ 35 = (28-15)/35 = 13/35

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      Convert both fractions into equivalent fractions having the same denominator. The value of this common denominator can be obtained by multiplying together the original denominators or there may be a Lowest Common Multiple that can be used. EXAMPLE: 4/5 - 3/7 : The common denominator is 5 x 7 = 35 4/5 = 28/35 : 5 divides into 35 seven times, so the numerator and denominator have both been multiplied by 7 to produce an equivalent fraction. 3/7 = 15/35 : As above, but in this case 7 divides into 35 five times, so 5 has been used as the multiplier. 28/35 - 15/35 = 13/35 : If the fraction could be simplified then at this stage this would be done. In practice, the above stages would be merged so that the calculation becomes :- 4/5 - 3/7 = (7x4) - (5x3) ÷ 35 = (28-15)/35 = 13/35

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