Question 80979
X+2Y=23
4X+2Y=38 MULTIPLY THE FIRST EQUATION BY -1 & ADD THEM.
-X-2Y=-23
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3X=15
X=15/3
X=5 ANSWER.
5+2Y=23
2Y=23-5
2Y=18
Y=18/2
Y=9 ANSWER.
PROOF
4*5+2*9=38
20+18=38
38=38