8+7+X-11=90

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Solution for 8+7+X-11=90 equation:


Simplifying
8 + 7 + X + -11 = 90

Reorder the terms:
8 + 7 + -11 + X = 90

Combine like terms: 8 + 7 = 15
15 + -11 + X = 90

Combine like terms: 15 + -11 = 4
4 + X = 90

Solving
4 + X = 90

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 + X = 90 + -4

Combine like terms: 4 + -4 = 0
0 + X = 90 + -4
X = 90 + -4

Combine like terms: 90 + -4 = 86
X = 86

Simplifying
X = 86

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