3+21=-3(3x-8)

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


Simplifying
3 + 21 = -3(3x + -8)

Combine like terms: 3 + 21 = 24
24 = -3(3x + -8)

Reorder the terms:
24 = -3(-8 + 3x)
24 = (-8 * -3 + 3x * -3)
24 = (24 + -9x)

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

Combine like terms: 24 + -24 = 0
0 = 24 + -24 + -9x

Combine like terms: 24 + -24 = 0
0 = 0 + -9x
0 = -9x

Solving
0 = -9x

Solving for variable 'x'.

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

Add '9x' to each side of the equation.
0 + 9x = -9x + 9x
Remove the zero:
9x = -9x + 9x

Combine like terms: -9x + 9x = 0
9x = 0

Divide each side by '9'.
x = 0

Simplifying
x = 0

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