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2x-2\left(15x+7\right)=18
The opposite of -7 is 7.
2x-30x-14=18
Use the distributive property to multiply -2 by 15x+7.
-28x-14=18
Combine 2x and -30x to get -28x.
-28x=18+14
Add 14 to both sides.
-28x=32
Add 18 and 14 to get 32.
x=\frac{32}{-28}
Divide both sides by -28.
x=-\frac{8}{7}
Reduce the fraction \frac{32}{-28} to lowest terms by extracting and canceling out 4.