Solve for r
r = \frac{41}{7} = 5\frac{6}{7} \approx 5.857142857
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4r+8+3\left(r-6\right)=31
Use the distributive property to multiply 2 by 2r+4.
4r+8+3r-18=31
Use the distributive property to multiply 3 by r-6.
7r+8-18=31
Combine 4r and 3r to get 7r.
7r-10=31
Subtract 18 from 8 to get -10.
7r=31+10
Add 10 to both sides.
7r=41
Add 31 and 10 to get 41.
r=\frac{41}{7}
Divide both sides by 7.
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