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https://math.answers.com/algebra/2nd_-_Solve_by_substitution_2x_-_2y_12_1x_5y_34

2nd - Solve by substitution 2x - 2y 12 1x 5y 34? - Answers

2x - 2y = 12 (1)1x + 5y = 34 (2)x + 5y = 34 subtract 5y to both sidesx = 34 - 5y (3)Substitute 34 - 5y for x into the first equation2x - 2y = 122(34 - 5y) - 2y = 1268 - 10y - 2y = 1268 - 12y = 12 subtract 68 to both sides-12y = -56 divide by -12 to both sidesy = 4.666666667Substitute 4.7 for y into the third equationx = 34 - 5yx = 34 - 5(4.7)x = 34 - 23.33333333x = 10.66666667Check:



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2nd - Solve by substitution 2x - 2y 12 1x 5y 34? - Answers

https://math.answers.com/algebra/2nd_-_Solve_by_substitution_2x_-_2y_12_1x_5y_34

2x - 2y = 12 (1)1x + 5y = 34 (2)x + 5y = 34 subtract 5y to both sidesx = 34 - 5y (3)Substitute 34 - 5y for x into the first equation2x - 2y = 122(34 - 5y) - 2y = 1268 - 10y - 2y = 1268 - 12y = 12 subtract 68 to both sides-12y = -56 divide by -12 to both sidesy = 4.666666667Substitute 4.7 for y into the third equationx = 34 - 5yx = 34 - 5(4.7)x = 34 - 23.33333333x = 10.66666667Check:



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https://math.answers.com/algebra/2nd_-_Solve_by_substitution_2x_-_2y_12_1x_5y_34

2nd - Solve by substitution 2x - 2y 12 1x 5y 34? - Answers

2x - 2y = 12 (1)1x + 5y = 34 (2)x + 5y = 34 subtract 5y to both sidesx = 34 - 5y (3)Substitute 34 - 5y for x into the first equation2x - 2y = 122(34 - 5y) - 2y = 1268 - 10y - 2y = 1268 - 12y = 12 subtract 68 to both sides-12y = -56 divide by -12 to both sidesy = 4.666666667Substitute 4.7 for y into the third equationx = 34 - 5yx = 34 - 5(4.7)x = 34 - 23.33333333x = 10.66666667Check:

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      2x - 2y = 12 (1)1x + 5y = 34 (2)x + 5y = 34 subtract 5y to both sidesx = 34 - 5y (3)Substitute 34 - 5y for x into the first equation2x - 2y = 122(34 - 5y) - 2y = 1268 - 10y - 2y = 1268 - 12y = 12 subtract 68 to both sides-12y = -56 divide by -12 to both sidesy = 4.666666667Substitute 4.7 for y into the third equationx = 34 - 5yx = 34 - 5(4.7)x = 34 - 23.33333333x = 10.66666667Check:
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