(10+x)+x=285

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Solution for (10+x)+x=285 equation: 


Simplifying
(10 + x) + x = 285

Remove parenthesis around (10 + x)
10 + x + x = 285

Combine like terms: x + x = 2x
10 + 2x = 285

Solving
10 + 2x = 285

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 = 285 + -10

Combine like terms: 10 + -10 = 0
0 + 2x = 285 + -10
2x = 285 + -10

Combine like terms: 285 + -10 = 275
2x = 275

Divide each side by '2'.
x = 137.5

Simplifying
x = 137.5

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