-2[5w-7]+9=-7

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Solution for -2[5w-7]+9=-7 equation:


Simplifying
-2[5w + -7] + 9 = -7

Reorder the terms:
-2[-7 + 5w] + 9 = -7
[-7 * -2 + 5w * -2] + 9 = -7
[14 + -10w] + 9 = -7

Reorder the terms:
14 + 9 + -10w = -7

Combine like terms: 14 + 9 = 23
23 + -10w = -7

Solving
23 + -10w = -7

Solving for variable 'w'.

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

Add '-23' to each side of the equation.
23 + -23 + -10w = -7 + -23

Combine like terms: 23 + -23 = 0
0 + -10w = -7 + -23
-10w = -7 + -23

Combine like terms: -7 + -23 = -30
-10w = -30

Divide each side by '-10'.
w = 3

Simplifying
w = 3

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