Solve for x
x=-4
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2x+1=\frac{21}{-3}
Divide both sides by -3.
2x+1=-7
Divide 21 by -3 to get -7.
2x=-7-1
Subtract 1 from both sides.
2x=-8
Subtract 1 from -7 to get -8.
x=\frac{-8}{2}
Divide both sides by 2.
x=-4
Divide -8 by 2 to get -4.
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