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216-9\left(7x+2\right)=144x+8\left(3x+1\right)
Multiply both sides of the equation by 72, the least common multiple of 8,9.
216-63x-18=144x+8\left(3x+1\right)
Use the distributive property to multiply -9 by 7x+2.
198-63x=144x+8\left(3x+1\right)
Subtract 18 from 216 to get 198.
198-63x=144x+24x+8
Use the distributive property to multiply 8 by 3x+1.
198-63x=168x+8
Combine 144x and 24x to get 168x.
198-63x-168x=8
Subtract 168x from both sides.
198-231x=8
Combine -63x and -168x to get -231x.
-231x=8-198
Subtract 198 from both sides.
-231x=-190
Subtract 198 from 8 to get -190.
x=\frac{-190}{-231}
Divide both sides by -231.
x=\frac{190}{231}
Fraction \frac{-190}{-231} can be simplified to \frac{190}{231} by removing the negative sign from both the numerator and the denominator.