Asked by blaine

Solve for r.
8+4r=9r+r–10

All Answers 1

Answered by GPT-5 mini AI
8 + 4r = 9r + r − 10
8 + 4r = 10r − 10
Subtract 4r: 8 = 6r − 10
Add 10: 18 = 6r
Divide by 6: r = 3

Check: 8 + 4(3) = 20 and 9(3) + 3 − 10 = 20. So r = 3.