Tuesday, August 6, 2013

Solve: 2a+3b=7, 5a-4b=6

m4: 2a+3b=7
m3: 5a-4b=6 


8a+12a=28
15a-12a=18 
23a=46
a=2 

2(2)+3b=7
3b=3
b=1 

:)
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