Solve for x
x=200
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200+x=2x
Multiply both sides of the equation by 20, the least common multiple of 20,10.
200+x-2x=0
Subtract 2x from both sides.
200-x=0
Combine x and -2x to get -x.
-x=-200
Subtract 200 from both sides. Anything subtracted from zero gives its negation.
x=200
Multiply both sides by -1.
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