12w-21=3(w+5)

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Solution for 12w-21=3(w+5) equation:


Simplifying
12w + -21 = 3(w + 5)

Reorder the terms:
-21 + 12w = 3(w + 5)

Reorder the terms:
-21 + 12w = 3(5 + w)
-21 + 12w = (5 * 3 + w * 3)
-21 + 12w = (15 + 3w)

Solving
-21 + 12w = 15 + 3w

Solving for variable 'w'.

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

Add '-3w' to each side of the equation.
-21 + 12w + -3w = 15 + 3w + -3w

Combine like terms: 12w + -3w = 9w
-21 + 9w = 15 + 3w + -3w

Combine like terms: 3w + -3w = 0
-21 + 9w = 15 + 0
-21 + 9w = 15

Add '21' to each side of the equation.
-21 + 21 + 9w = 15 + 21

Combine like terms: -21 + 21 = 0
0 + 9w = 15 + 21
9w = 15 + 21

Combine like terms: 15 + 21 = 36
9w = 36

Divide each side by '9'.
w = 4

Simplifying
w = 4

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