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7\left(7w-8\right)=168-6\left(9w+3\right)
Multiply both sides of the equation by 42, the least common multiple of 6,7.
49w-56=168-6\left(9w+3\right)
Use the distributive property to multiply 7 by 7w-8.
49w-56=168-54w-18
Use the distributive property to multiply -6 by 9w+3.
49w-56=150-54w
Subtract 18 from 168 to get 150.
49w-56+54w=150
Add 54w to both sides.
103w-56=150
Combine 49w and 54w to get 103w.
103w=150+56
Add 56 to both sides.
103w=206
Add 150 and 56 to get 206.
w=\frac{206}{103}
Divide both sides by 103.
w=2
Divide 206 by 103 to get 2.