x+640+x=1985

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Solution for x+640+x=1985 equation: 


Simplifying
x + 640 + x = 1985

Reorder the terms:
640 + x + x = 1985

Combine like terms: x + x = 2x
640 + 2x = 1985

Solving
640 + 2x = 1985

Solving for variable 'x'.

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

Add '-640' to each side of the equation.
640 + -640 + 2x = 1985 + -640

Combine like terms: 640 + -640 = 0
0 + 2x = 1985 + -640
2x = 1985 + -640

Combine like terms: 1985 + -640 = 1345
2x = 1345

Divide each side by '2'.
x = 672.5

Simplifying
x = 672.5

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