200=(180-x)+(90-x)

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Solution for 200=(180-x)+(90-x) equation:


Simplifying
200 = (180 + -1x) + (90 + -1x)

Remove parenthesis around (180 + -1x)
200 = 180 + -1x + (90 + -1x)

Remove parenthesis around (90 + -1x)
200 = 180 + -1x + 90 + -1x

Reorder the terms:
200 = 180 + 90 + -1x + -1x

Combine like terms: 180 + 90 = 270
200 = 270 + -1x + -1x

Combine like terms: -1x + -1x = -2x
200 = 270 + -2x

Solving
200 = 270 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
200 + 2x = 270 + -2x + 2x

Combine like terms: -2x + 2x = 0
200 + 2x = 270 + 0
200 + 2x = 270

Add '-200' to each side of the equation.
200 + -200 + 2x = 270 + -200

Combine like terms: 200 + -200 = 0
0 + 2x = 270 + -200
2x = 270 + -200

Combine like terms: 270 + -200 = 70
2x = 70

Divide each side by '2'.
x = 35

Simplifying
x = 35

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