3x-(12-x)=13

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Solution for 3x-(12-x)=13 equation:


Simplifying
3x + -1(12 + -1x) = 13
3x + (12 * -1 + -1x * -1) = 13
3x + (-12 + 1x) = 13

Reorder the terms:
-12 + 3x + 1x = 13

Combine like terms: 3x + 1x = 4x
-12 + 4x = 13

Solving
-12 + 4x = 13

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 + 4x = 13 + 12

Combine like terms: -12 + 12 = 0
0 + 4x = 13 + 12
4x = 13 + 12

Combine like terms: 13 + 12 = 25
4x = 25

Divide each side by '4'.
x = 6.25

Simplifying
x = 6.25

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