joanis0412 joanis0412

19-10-2016
Mathematics

Answered

1.2x-0.8y=-6

4.8x+2.4y=60

Verified Answer :

2043306702 2043306702

19-10-2016

12x-8y=-60
48x+24y=600
3x-2y=-15
2x+y=25
So y=25-2x
So 3x-2(25-2x)=-15
3x-50+4x=-15
7x=35
X=5
So y=25-10=15

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