3w-3(4w+8)=21

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Solution for 3w-3(4w+8)=21 equation:


Simplifying
3w + -3(4w + 8) = 21

Reorder the terms:
3w + -3(8 + 4w) = 21
3w + (8 * -3 + 4w * -3) = 21
3w + (-24 + -12w) = 21

Reorder the terms:
-24 + 3w + -12w = 21

Combine like terms: 3w + -12w = -9w
-24 + -9w = 21

Solving
-24 + -9w = 21

Solving for variable 'w'.

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

Add '24' to each side of the equation.
-24 + 24 + -9w = 21 + 24

Combine like terms: -24 + 24 = 0
0 + -9w = 21 + 24
-9w = 21 + 24

Combine like terms: 21 + 24 = 45
-9w = 45

Divide each side by '-9'.
w = -5

Simplifying
w = -5

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