Question 229760
2x-10y=24  
-4x+10y=-8  add.
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-2x=16
x=16/-2
x=-8 ans.
2*-8-10y=24
-16-10y=24
-10y=24+16
-10y=40
y=40/-10
y=-4 ans.
Proof:
-4*-8+10*-4=-8
32-40=-8
-8=-8