
Bryan P. answered 01/13/16
Tutor
4.9
(470)
Math, Science & Test Prep
a + b = 48
a - b = 12
------------- add the two equations
2a = 60
a = 30
b = 18
John S.
asked 01/13/16Bryan P. answered 01/13/16
Math, Science & Test Prep
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