mads34
mads34
03-04-2017
Mathematics
contestada
2x+5y=60
2x-5y=-20
Please show work!
Respuesta :
Goalinetsky
Goalinetsky
03-04-2017
(2x+5y=60)
- (2x-5y=-20)
-------------------
10y=80
y=8
2x+5(8)=60
2x+40=60
2x=20
x=10
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