84=7w+42-8w-36

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Solution for 84=7w+42-8w-36 equation:


Simplifying
84 = 7w + 42 + -8w + -36

Reorder the terms:
84 = 42 + -36 + 7w + -8w

Combine like terms: 42 + -36 = 6
84 = 6 + 7w + -8w

Combine like terms: 7w + -8w = -1w
84 = 6 + -1w

Solving
84 = 6 + -1w

Solving for variable 'w'.

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

Add 'w' to each side of the equation.
84 + w = 6 + -1w + w

Combine like terms: -1w + w = 0
84 + w = 6 + 0
84 + w = 6

Add '-84' to each side of the equation.
84 + -84 + w = 6 + -84

Combine like terms: 84 + -84 = 0
0 + w = 6 + -84
w = 6 + -84

Combine like terms: 6 + -84 = -78
w = -78

Simplifying
w = -78

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