SOLUTION: Find the values of x and y that solve the following system of equations. 3x+5y=25 -7x+4y=20

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Question 155455: Find the values of x and y that solve the following system of equations.
3x+5y=25
-7x+4y=20
Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
3x%2B5y=25
-7x%2B4y=20
using elimination method
and doing:
1st eq by (4) and 2nd by(-5)
12x%2B20y=100
35x-20y=-100
adding:
47x=0
then x=0
using 1st eq
5y=25
then
y=5

Answer: x=0,y=5