Solve for x
x=-13
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13+x=6-7+1
Add 2 and 11 to get 13.
13+x=-1+1
Subtract 7 from 6 to get -1.
13+x=0
Add -1 and 1 to get 0.
x=-13
Subtract 13 from both sides. Anything subtracted from zero gives its negation.
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