4x-(12-x)=18

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Solution for 4x-(12-x)=18 equation:


Simplifying
4x + -1(12 + -1x) = 18
4x + (12 * -1 + -1x * -1) = 18
4x + (-12 + 1x) = 18

Reorder the terms:
-12 + 4x + 1x = 18

Combine like terms: 4x + 1x = 5x
-12 + 5x = 18

Solving
-12 + 5x = 18

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 5x = 18 + 12

Combine like terms: -12 + 12 = 0
0 + 5x = 18 + 12
5x = 18 + 12

Combine like terms: 18 + 12 = 30
5x = 30

Divide each side by '5'.
x = 6

Simplifying
x = 6

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