12=w-[-7]

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Solution for 12=w-[-7] equation:


Simplifying
12 = w + -1[-7]

Multiply -1 * -7
12 = w + 7

Reorder the terms:
12 = 7 + w

Solving
12 = 7 + w

Solving for variable 'w'.

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

Add '-1w' to each side of the equation.
12 + -1w = 7 + w + -1w

Combine like terms: w + -1w = 0
12 + -1w = 7 + 0
12 + -1w = 7

Add '-12' to each side of the equation.
12 + -12 + -1w = 7 + -12

Combine like terms: 12 + -12 = 0
0 + -1w = 7 + -12
-1w = 7 + -12

Combine like terms: 7 + -12 = -5
-1w = -5

Divide each side by '-1'.
w = 5

Simplifying
w = 5

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