What is the value of x when y = 42 in the equation y = x - 4(x - 1)? Show work so that I can understand :)

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asked Jun 7, 2018 6.3k views

1 Answer

Aeefire · Answer 1 · 2018-06-13T04:16:49+0000

y = x - 4(x - 1)....when y = 42
42 = x - 4(x - 1)...distribute thru the parenthesis
42 = x - 4x + 4 ...combine like terms on the right side
42 = -3x + 4 ...subtract 4 from both sides
42 - 4 = - 3x
38 = -3x ...divide both sides by -3
-38/3 = x

What is the value of x when y = 42 in the equation y = x - 4(x - 1)? Show work so that I can understand :)

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