x+x+8=50

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Solution for x+x+8=50 equation: 


Simplifying
x + x + 8 = 50

Reorder the terms:
8 + x + x = 50

Combine like terms: x + x = 2x
8 + 2x = 50

Solving
8 + 2x = 50

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + 2x = 50 + -8

Combine like terms: 8 + -8 = 0
0 + 2x = 50 + -8
2x = 50 + -8

Combine like terms: 50 + -8 = 42
2x = 42

Divide each side by '2'.
x = 21

Simplifying
x = 21

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