−5x+2y=9 y=7x ​ solve the system of equation

Question

−5x+2y=9
y=7x
​

solve the system of equation

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Tài Đức 3 years 2021-08-19T10:26:36+00:00 1 Answers 1 views 0

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  1. Verity
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    2021-08-19T10:28:12+00:00
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    Here to solve the equation we need to plug in the value y as given. -5x+2(7x)=9. -5x+14x=9. 9x=9. X=1.

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )