Question 90394
Problem #1 
7r/12=-14 
Divide both sides by 7 to get:
r/12 = -2
Multiply both sides by 12 to get:
r = -24
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Problem #2 
1/3 s + 7/9 = 4/3 s 
Multiply thru by 9 to get:
3s + 7 = 12s
Subtract 3s from both sides to get:
9x = 7
Divide both sides by 9 to get:
x = 7/9
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Cheers,
Stan H.