42=31-7(5-4w)

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Solution for 42=31-7(5-4w) equation:


Simplifying
42 = 31 + -7(5 + -4w)
42 = 31 + (5 * -7 + -4w * -7)
42 = 31 + (-35 + 28w)

Combine like terms: 31 + -35 = -4
42 = -4 + 28w

Solving
42 = -4 + 28w

Solving for variable 'w'.

Move all terms containing w to the left, all other terms to the right.

Add '-28w' to each side of the equation.
42 + -28w = -4 + 28w + -28w

Combine like terms: 28w + -28w = 0
42 + -28w = -4 + 0
42 + -28w = -4

Add '-42' to each side of the equation.
42 + -42 + -28w = -4 + -42

Combine like terms: 42 + -42 = 0
0 + -28w = -4 + -42
-28w = -4 + -42

Combine like terms: -4 + -42 = -46
-28w = -46

Divide each side by '-28'.
w = 1.642857143

Simplifying
w = 1.642857143

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