3 x - 2 ( - 3,5 ) = 9
Solve for x
x=\frac{2}{3}\approx 0,666666667
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3x-\left(-7\right)=9
Multiply 2 and -3,5 to get -7.
3x+7=9
The opposite of -7 is 7.
3x=9-7
Subtract 7 from both sides.
3x=2
Subtract 7 from 9 to get 2.
x=\frac{2}{3}
Divide both sides by 3.
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