5x+(-1-x)=13

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Solution for 5x+(-1-x)=13 equation:


Simplifying
5x + (-1 + -1x) = 13

Remove parenthesis around (-1 + -1x)
5x + -1 + -1x = 13

Reorder the terms:
-1 + 5x + -1x = 13

Combine like terms: 5x + -1x = 4x
-1 + 4x = 13

Solving
-1 + 4x = 13

Solving for variable 'x'.

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

Add '1' to each side of the equation.
-1 + 1 + 4x = 13 + 1

Combine like terms: -1 + 1 = 0
0 + 4x = 13 + 1
4x = 13 + 1

Combine like terms: 13 + 1 = 14
4x = 14

Divide each side by '4'.
x = 3.5

Simplifying
x = 3.5

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