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-30-\left(2x+1\right)=10
Multiply both sides of the equation by 10.
-30-2x-1=10
To find the opposite of 2x+1, find the opposite of each term.
-31-2x=10
Subtract 1 from -30 to get -31.
-2x=10+31
Add 31 to both sides.
-2x=41
Add 10 and 31 to get 41.
x=\frac{41}{-2}
Divide both sides by -2.
x=-\frac{41}{2}
Fraction \frac{41}{-2} can be rewritten as -\frac{41}{2} by extracting the negative sign.