-7-11=X

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Solution for -7-11=X equation: 


Simplifying
-7 + -11 = X

Combine like terms: -7 + -11 = -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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