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10-2x-3=71
To find the opposite of 2x+3, find the opposite of each term.
7-2x=71
Subtract 3 from 10 to get 7.
-2x=71-7
Subtract 7 from both sides.
-2x=64
Subtract 7 from 71 to get 64.
x=\frac{64}{-2}
Divide both sides by -2.
x=-32
Divide 64 by -2 to get -32.