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OpenStudy (anonymous):
If 3a + 2b = 7 and 2a + 2b = 9 , what is the value of 5a+4b/2
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OpenStudy (raden):
3a + 2b = 7 2a + 2b = 9 add both equation above, get 5a + 4b = 16 then divided by 2 both side, get (5a+4b)/2 = 16/2 = ...... ?
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