3x-(-4x)+6x=18

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Solution for 3x-(-4x)+6x=18 equation: 


Simplifying
3x + -1(-4x) + 6x = 18

Remove parenthesis around (-4x)
3x + -1 * -4x + 6x = 18

Multiply -1 * -4
3x + 4x + 6x = 18

Combine like terms: 3x + 4x = 7x
7x + 6x = 18

Combine like terms: 7x + 6x = 13x
13x = 18

Solving
13x = 18

Solving for variable 'x'.

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

Divide each side by '13'.
x = 1.384615385

Simplifying
x = 1.384615385

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