-3(x+7)=-9x+9

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Solution for -3(x+7)=-9x+9 equation:


Simplifying
-3(x + 7) = -9x + 9

Reorder the terms:
-3(7 + x) = -9x + 9
(7 * -3 + x * -3) = -9x + 9
(-21 + -3x) = -9x + 9

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

Solving
-21 + -3x = 9 + -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.
-21 + -3x + 9x = 9 + -9x + 9x

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

Combine like terms: -9x + 9x = 0
-21 + 6x = 9 + 0
-21 + 6x = 9

Add '21' to each side of the equation.
-21 + 21 + 6x = 9 + 21

Combine like terms: -21 + 21 = 0
0 + 6x = 9 + 21
6x = 9 + 21

Combine like terms: 9 + 21 = 30
6x = 30

Divide each side by '6'.
x = 5

Simplifying
x = 5

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