x+x+10=90

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Solution for x+x+10=90 equation: 


Simplifying
x + x + 10 = 90

Reorder the terms:
10 + x + x = 90

Combine like terms: x + x = 2x
10 + 2x = 90

Solving
10 + 2x = 90

Solving for variable 'x'.

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

Add '-10' to each side of the equation.
10 + -10 + 2x = 90 + -10

Combine like terms: 10 + -10 = 0
0 + 2x = 90 + -10
2x = 90 + -10

Combine like terms: 90 + -10 = 80
2x = 80

Divide each side by '2'.
x = 40

Simplifying
x = 40

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