Question 242976
2x-y=5 multiply by 4 & add.
3x+4y=13
8x-4y=20
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11x=33
x=3/11
x=3 ans.
2*3-y=5
6-y=5
-y=5-6
-y=-1
y=1 ans.
Proof:
3*3+4*1=13
9+4=13
13=13