SOLUTION: Please help me solve (with the workings out) 100-4r=76 Thanx

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Question 718683: Please help me solve (with the workings out) 100-4r=76
Thanx
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
100 - 4r = 76
subtract 100 from both sides
-4r = 76 - 100
-4r = -24
r has to be positive, multiply both sides by -1
4r = 24
divide both sides by 4
r = 24/4
r = 6
:
:
Check that in the original problem
100 - 4(6) = 76
100 - 24 = 76