Question 218457
3x-y=11 MULTIPLY BY 2 & ADD.
2x+2y=18
6X-2Y=22
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8X=40
X=40/8
X=5 ANS.
3*5-Y=11
15-Y=11
-Y=11-15
-Y=-4
Y=4 ANS.
PROOF:
2*5+2*4=18
10+8=18
18=18