Question 971856
X+Y=5 MULTIPLY BY 2 & ADD.
-4X-2Y=-8
2X+2Y=10
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-2X=2
X=2/-2=-1 ANS.
-1=Y=5
Y=5+1=6 ANS.
PROOF:
-4*-1-2*6=-8
4-12=-8
-8=-8