Solve for a
a=10+c-b
Solve for b
b=10+c-a
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a+50+b=c+60
Add 30 and 20 to get 50.
a+b=c+60-50
Subtract 50 from both sides.
a+b=c+10
Subtract 50 from 60 to get 10.
a=c+10-b
Subtract b from both sides.
a+50+b=c+60
Add 30 and 20 to get 50.
50+b=c+60-a
Subtract a from both sides.
b=c+60-a-50
Subtract 50 from both sides.
b=c+10-a
Subtract 50 from 60 to get 10.
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