-3(x-7)=9

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


Simplifying
-3(x + -7) = 9

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

Solving
21 + -3x = 9

Solving for variable 'x'.

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

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

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

Combine like terms: 9 + -21 = -12
-3x = -12

Divide each side by '-3'.
x = 4

Simplifying
x = 4

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