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10\left(6+7x\right)-6\left(5x-3\right)=30x-75
Multiply both sides of the equation by 30, the least common multiple of 3,5,2.
60+70x-6\left(5x-3\right)=30x-75
Use the distributive property to multiply 10 by 6+7x.
60+70x-30x+18=30x-75
Use the distributive property to multiply -6 by 5x-3.
60+40x+18=30x-75
Combine 70x and -30x to get 40x.
78+40x=30x-75
Add 60 and 18 to get 78.
78+40x-30x=-75
Subtract 30x from both sides.
78+10x=-75
Combine 40x and -30x to get 10x.
10x=-75-78
Subtract 78 from both sides.
10x=-153
Subtract 78 from -75 to get -153.
x=\frac{-153}{10}
Divide both sides by 10.
x=-\frac{153}{10}
Fraction \frac{-153}{10} can be rewritten as -\frac{153}{10} by extracting the negative sign.