3x-(-4)=13

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Solution for 3x-(-4)=13 equation: 


Simplifying
3x + -1(-4) = 13

Multiply -1 * -4
3x + 4 = 13

Reorder the terms:
4 + 3x = 13

Solving
4 + 3x = 13

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 3x = 13 + -4

Combine like terms: 4 + -4 = 0
0 + 3x = 13 + -4
3x = 13 + -4

Combine like terms: 13 + -4 = 9
3x = 9

Divide each side by '3'.
x = 3

Simplifying
x = 3

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