Need help to solve it using Substitution method y= x-7 y= -4x-2​

Question

Need help to solve it using Substitution method

y= x-7
y= -4x-2​

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Vodka 4 years 2021-08-06T00:23:59+00:00 1 Answers 15 views 0

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  1. thucuc
    0
    2021-08-06T00:25:03+00:00
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    Substitute the value y: x-7=-4x-2
    Solve the equation: x =1
    Substitute the value of x: y=-4(1) -2
    Solve the equation: y= -6
    Solution: (x, y) = (1, -6)

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