3x-(x+-7)=18

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Solution for 3x-(x+-7)=18 equation:


Simplifying
3x + -1(x + -7) = 18

Reorder the terms:
3x + -1(-7 + x) = 18
3x + (-7 * -1 + x * -1) = 18
3x + (7 + -1x) = 18

Reorder the terms:
7 + 3x + -1x = 18

Combine like terms: 3x + -1x = 2x
7 + 2x = 18

Solving
7 + 2x = 18

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 2x = 18 + -7

Combine like terms: 7 + -7 = 0
0 + 2x = 18 + -7
2x = 18 + -7

Combine like terms: 18 + -7 = 11
2x = 11

Divide each side by '2'.
x = 5.5

Simplifying
x = 5.5

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