kiaralynn101 kiaralynn101

14-09-2017
Mathematics

contestada

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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texaschic101 texaschic101

14-09-2017

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

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