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2x-7y equals 8 3x-4y equals -1? - Answers

2x - 7y = 83x - 4y = -1 multiply the first equation by -3, and the second one by 2-6x + 21y = -246x - 8y = -2 add boyh equations13y = -26 divide by 13 to both sidesy = -2 substitute -2 for y in the first equation2x - 7(-2) = 82x + 14 = 8 subtract 14 to both sides2x = -6 divide by 2 to both sidesx = -3Thus the solution is (-3, -2).Check:



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2x-7y equals 8 3x-4y equals -1? - Answers

https://math.answers.com/math-and-arithmetic/2x-7y_equals_8_3x-4y_equals_-1

2x - 7y = 83x - 4y = -1 multiply the first equation by -3, and the second one by 2-6x + 21y = -246x - 8y = -2 add boyh equations13y = -26 divide by 13 to both sidesy = -2 substitute -2 for y in the first equation2x - 7(-2) = 82x + 14 = 8 subtract 14 to both sides2x = -6 divide by 2 to both sidesx = -3Thus the solution is (-3, -2).Check:



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https://math.answers.com/math-and-arithmetic/2x-7y_equals_8_3x-4y_equals_-1

2x-7y equals 8 3x-4y equals -1? - Answers

2x - 7y = 83x - 4y = -1 multiply the first equation by -3, and the second one by 2-6x + 21y = -246x - 8y = -2 add boyh equations13y = -26 divide by 13 to both sidesy = -2 substitute -2 for y in the first equation2x - 7(-2) = 82x + 14 = 8 subtract 14 to both sides2x = -6 divide by 2 to both sidesx = -3Thus the solution is (-3, -2).Check:

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      2x - 7y = 83x - 4y = -1 multiply the first equation by -3, and the second one by 2-6x + 21y = -246x - 8y = -2 add boyh equations13y = -26 divide by 13 to both sidesy = -2 substitute -2 for y in the first equation2x - 7(-2) = 82x + 14 = 8 subtract 14 to both sides2x = -6 divide by 2 to both sidesx = -3Thus the solution is (-3, -2).Check:

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