Solve for x
x=-200
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3+x+98+99=0
Add 1 and 2 to get 3.
101+x+99=0
Add 3 and 98 to get 101.
200+x=0
Add 101 and 99 to get 200.
x=-200
Subtract 200 from both sides. Anything subtracted from zero gives its negation.
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