3(w+7)-(-7w-4)=9w

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Solution for 3(w+7)-(-7w-4)=9w equation:


Simplifying
3(w + 7) + -1(-7w + -4) = 9w

Reorder the terms:
3(7 + w) + -1(-7w + -4) = 9w
(7 * 3 + w * 3) + -1(-7w + -4) = 9w
(21 + 3w) + -1(-7w + -4) = 9w

Reorder the terms:
21 + 3w + -1(-4 + -7w) = 9w
21 + 3w + (-4 * -1 + -7w * -1) = 9w
21 + 3w + (4 + 7w) = 9w

Reorder the terms:
21 + 4 + 3w + 7w = 9w

Combine like terms: 21 + 4 = 25
25 + 3w + 7w = 9w

Combine like terms: 3w + 7w = 10w
25 + 10w = 9w

Solving
25 + 10w = 9w

Solving for variable 'w'.

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

Add '-9w' to each side of the equation.
25 + 10w + -9w = 9w + -9w

Combine like terms: 10w + -9w = 1w
25 + 1w = 9w + -9w

Combine like terms: 9w + -9w = 0
25 + 1w = 0

Add '-25' to each side of the equation.
25 + -25 + 1w = 0 + -25

Combine like terms: 25 + -25 = 0
0 + 1w = 0 + -25
1w = 0 + -25

Combine like terms: 0 + -25 = -25
1w = -25

Divide each side by '1'.
w = -25

Simplifying
w = -25

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