3x+3(-2x-3)=21

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Solution for 3x+3(-2x-3)=21 equation:


Simplifying
3x + 3(-2x + -3) = 21

Reorder the terms:
3x + 3(-3 + -2x) = 21
3x + (-3 * 3 + -2x * 3) = 21
3x + (-9 + -6x) = 21

Reorder the terms:
-9 + 3x + -6x = 21

Combine like terms: 3x + -6x = -3x
-9 + -3x = 21

Solving
-9 + -3x = 21

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + -3x = 21 + 9

Combine like terms: -9 + 9 = 0
0 + -3x = 21 + 9
-3x = 21 + 9

Combine like terms: 21 + 9 = 30
-3x = 30

Divide each side by '-3'.
x = -10

Simplifying
x = -10

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