Question 709142
X+2Y=8 MULTIPLY BY -2 & ADD.
2X+Y=13
-2X-4Y=-16
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-3Y=-3
Y=-3/-3
Y=1 ANS.
X+2*1=8
X+2=8
X=8-2
X=6 ANS.
PROOF:
2*6+1=13
12+1=13
13=13