7w-(3w-7)=-9

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Solution for 7w-(3w-7)=-9 equation:


Simplifying
7w + -1(3w + -7) = -9

Reorder the terms:
7w + -1(-7 + 3w) = -9
7w + (-7 * -1 + 3w * -1) = -9
7w + (7 + -3w) = -9

Reorder the terms:
7 + 7w + -3w = -9

Combine like terms: 7w + -3w = 4w
7 + 4w = -9

Solving
7 + 4w = -9

Solving for variable 'w'.

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

Add '-7' to each side of the equation.
7 + -7 + 4w = -9 + -7

Combine like terms: 7 + -7 = 0
0 + 4w = -9 + -7
4w = -9 + -7

Combine like terms: -9 + -7 = -16
4w = -16

Divide each side by '4'.
w = -4

Simplifying
w = -4

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