20-9=4(15-w)

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Solution for 20-9=4(15-w) equation: 


Simplifying
20 + -9 = 4(15 + -1w)

Combine like terms: 20 + -9 = 11
11 = 4(15 + -1w)
11 = (15 * 4 + -1w * 4)
11 = (60 + -4w)

Solving
11 = 60 + -4w

Solving for variable 'w'.

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

Add '4w' to each side of the equation.
11 + 4w = 60 + -4w + 4w

Combine like terms: -4w + 4w = 0
11 + 4w = 60 + 0
11 + 4w = 60

Add '-11' to each side of the equation.
11 + -11 + 4w = 60 + -11

Combine like terms: 11 + -11 = 0
0 + 4w = 60 + -11
4w = 60 + -11

Combine like terms: 60 + -11 = 49
4w = 49

Divide each side by '4'.
w = 12.25

Simplifying
w = 12.25

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