200-x=900-8x

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Solution for 200-x=900-8x equation:


Simplifying
200 + -1x = 900 + -8x

Solving
200 + -1x = 900 + -8x

Solving for variable 'x'.

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

Add '8x' to each side of the equation.
200 + -1x + 8x = 900 + -8x + 8x

Combine like terms: -1x + 8x = 7x
200 + 7x = 900 + -8x + 8x

Combine like terms: -8x + 8x = 0
200 + 7x = 900 + 0
200 + 7x = 900

Add '-200' to each side of the equation.
200 + -200 + 7x = 900 + -200

Combine like terms: 200 + -200 = 0
0 + 7x = 900 + -200
7x = 900 + -200

Combine like terms: 900 + -200 = 700
7x = 700

Divide each side by '7'.
x = 100

Simplifying
x = 100

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