78=7w-12

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Solution for 78=7w-12 equation:


Simplifying
78 = 7w + -12

Reorder the terms:
78 = -12 + 7w

Solving
78 = -12 + 7w

Solving for variable 'w'.

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

Add '-7w' to each side of the equation.
78 + -7w = -12 + 7w + -7w

Combine like terms: 7w + -7w = 0
78 + -7w = -12 + 0
78 + -7w = -12

Add '-78' to each side of the equation.
78 + -78 + -7w = -12 + -78

Combine like terms: 78 + -78 = 0
0 + -7w = -12 + -78
-7w = -12 + -78

Combine like terms: -12 + -78 = -90
-7w = -90

Divide each side by '-7'.
w = 12.85714286

Simplifying
w = 12.85714286

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