3w+7(4w)-20=12

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Solution for 3w+7(4w)-20=12 equation:


Simplifying
3w + 7(4w) + -20 = 12

Remove parenthesis around (4w)
3w + 7 * 4w + -20 = 12

Multiply 7 * 4
3w + 28w + -20 = 12

Reorder the terms:
-20 + 3w + 28w = 12

Combine like terms: 3w + 28w = 31w
-20 + 31w = 12

Solving
-20 + 31w = 12

Solving for variable 'w'.

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

Add '20' to each side of the equation.
-20 + 20 + 31w = 12 + 20

Combine like terms: -20 + 20 = 0
0 + 31w = 12 + 20
31w = 12 + 20

Combine like terms: 12 + 20 = 32
31w = 32

Divide each side by '31'.
w = 1.032258065

Simplifying
w = 1.032258065

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