13+(-4)+(-4)+13=x

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


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

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

Combine like terms: 9 + -4 = 5
5 + 13 = x

Combine like terms: 5 + 13 = 18
18 = x

Solving
18 = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
18 + -1x = x + -1x

Combine like terms: x + -1x = 0
18 + -1x = 0

Add '-18' to each side of the equation.
18 + -18 + -1x = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -1x = 0 + -18
-1x = 0 + -18

Combine like terms: 0 + -18 = -18
-1x = -18

Divide each side by '-1'.
x = 18

Simplifying
x = 18

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