SOLUTION: 2X-3Y=1 -X+2y=-4
Algebra
->
Expressions-with-variables
-> SOLUTION: 2X-3Y=1 -X+2y=-4
Log On
Algebra: Expressions involving variables, substitution
Section
Solvers
Solvers
Lessons
Lessons
Answers archive
Answers
Click here to see ALL problems on Expressions-with-variables
Question 390921
:
2X-3Y=1
-X+2y=-4
Answer by
mananth(16946)
(
Show Source
):
You can
put this solution on YOUR website!
2x-3y=1...................1
-x+2y=-4..................2
..
multiply (2) by 2
-2x+4y=8
add this to (1)
2x-2x-3y+4y=1-8
y=-7
..
plug value of y in 2
-x+2*-7=-4
-x-14=-4
-x=14-4
-x=10
/-1
x= -10
...