X+7+2x+6=90

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Solution for X+7+2x+6=90 equation:


Simplifying
X + 7 + 2x + 6 = 90

Reorder the terms:
7 + 6 + X + 2x = 90

Combine like terms: 7 + 6 = 13
13 + X + 2x = 90

Solving
13 + X + 2x = 90

Solving for variable 'X'.

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

Add '-13' to each side of the equation.
13 + X + -13 + 2x = 90 + -13

Reorder the terms:
13 + -13 + X + 2x = 90 + -13

Combine like terms: 13 + -13 = 0
0 + X + 2x = 90 + -13
X + 2x = 90 + -13

Combine like terms: 90 + -13 = 77
X + 2x = 77

Add '-2x' to each side of the equation.
X + 2x + -2x = 77 + -2x

Combine like terms: 2x + -2x = 0
X + 0 = 77 + -2x
X = 77 + -2x

Simplifying
X = 77 + -2x

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