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5\left(x+1\right)=8\left(x+9\right)
Multiply both sides of the equation by 40, the least common multiple of 8,5.
5x+5=8\left(x+9\right)
Use the distributive property to multiply 5 by x+1.
5x+5=8x+72
Use the distributive property to multiply 8 by x+9.
5x+5-8x=72
Subtract 8x from both sides.
-3x+5=72
Combine 5x and -8x to get -3x.
-3x=72-5
Subtract 5 from both sides.
-3x=67
Subtract 5 from 72 to get 67.
x=\frac{67}{-3}
Divide both sides by -3.
x=-\frac{67}{3}
Fraction \frac{67}{-3} can be rewritten as -\frac{67}{3} by extracting the negative sign.