SOLUTION: a first number plus twice a second number is 8. twice the first number plus the second totals 13.

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Question 709142:
a first number plus twice a second number is 8. twice the first number plus the second totals 13.
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
X+2Y=8 MULTIPLY BY -2 & ADD.
2X+Y=13
-2X-4Y=-16
--------------------
-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