4x+7(-x-3)=12

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Solution for 4x+7(-x-3)=12 equation:


Simplifying
4x + 7(-1x + -3) = 12

Reorder the terms:
4x + 7(-3 + -1x) = 12
4x + (-3 * 7 + -1x * 7) = 12
4x + (-21 + -7x) = 12

Reorder the terms:
-21 + 4x + -7x = 12

Combine like terms: 4x + -7x = -3x
-21 + -3x = 12

Solving
-21 + -3x = 12

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 = 12 + 21

Combine like terms: -21 + 21 = 0
0 + -3x = 12 + 21
-3x = 12 + 21

Combine like terms: 12 + 21 = 33
-3x = 33

Divide each side by '-3'.
x = -11

Simplifying
x = -11

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