2=w-(-7)

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Solution for 2=w-(-7) equation:


Simplifying
2 = w + -1(-7)

Multiply -1 * -7
2 = w + 7

Reorder the terms:
2 = 7 + w

Solving
2 = 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.
2 + -1w = 7 + w + -1w

Combine like terms: w + -1w = 0
2 + -1w = 7 + 0
2 + -1w = 7

Add '-2' to each side of the equation.
2 + -2 + -1w = 7 + -2

Combine like terms: 2 + -2 = 0
0 + -1w = 7 + -2
-1w = 7 + -2

Combine like terms: 7 + -2 = 5
-1w = 5

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

Simplifying
w = -5

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