-7=-7w+4(w+5)

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


Simplifying
-7 = -7w + 4(w + 5)

Reorder the terms:
-7 = -7w + 4(5 + w)
-7 = -7w + (5 * 4 + w * 4)
-7 = -7w + (20 + 4w)

Reorder the terms:
-7 = 20 + -7w + 4w

Combine like terms: -7w + 4w = -3w
-7 = 20 + -3w

Solving
-7 = 20 + -3w

Solving for variable 'w'.

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

Add '3w' to each side of the equation.
-7 + 3w = 20 + -3w + 3w

Combine like terms: -3w + 3w = 0
-7 + 3w = 20 + 0
-7 + 3w = 20

Add '7' to each side of the equation.
-7 + 7 + 3w = 20 + 7

Combine like terms: -7 + 7 = 0
0 + 3w = 20 + 7
3w = 20 + 7

Combine like terms: 20 + 7 = 27
3w = 27

Divide each side by '3'.
w = 9

Simplifying
w = 9

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