SOLUTION: solve the following system of equations using substitution method: y=x+4 Y=2X+3 COULD YOU PLEASE HELP

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Question 316073: solve the following system of equations using substitution method:
y=x+4
Y=2X+3
COULD YOU PLEASE HELP
Found 2 solutions by Alan3354, rfer:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
solve the following system of equations using substitution method:
y=x+4
Y=2X+3
-----------
Since they both equal y, they equal each other.
x+4 = 2x+3
Take it from there.

Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
y=x+4 x=y-4
y=2x+3
y=2(y-4)+3
y=2y-8+3
-y=-5
y=5
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x=5-4
x=1
---------
5=2*1+3