SOLUTION: how do u solve (3,1);{x+3y=6 {4x-5y=7

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Question 543094: how do u solve (3,1);{x+3y=6 {4x-5y=7
Answer by jpg7n16(66) About Me  (Show Source):
You can put this solution on YOUR website!
"Stack" and reduce
1) x%2B3y=6
2) 4x-5y=7
make both have the same # of X's or Y's. Since it's easier w/ X, multiply #1 by 4
1) 4x%2B12y=24
2) 4x-5y=7
Subtract #2 from #1, don't forget the 5y is negative (-- = +)
17y=17
y=1
.
Therefore
x%2B3y=6
x%2B3%281%29=6
x%2B3=6
x=3