SOLUTION: x+y=1 -2x+y=4
Algebra
->
Test
-> SOLUTION: x+y=1 -2x+y=4
Log On
Test Calculators and Practice
Test
Answers archive
Answers
Word Problems
Word
Lessons
Lessons
Click here to see ALL problems on test
Question 705798
:
x+y=1 -2x+y=4
Answer by
checkley79(3341)
(
Show Source
):
You can
put this solution on YOUR website!
x+y=1 MULTIPLY BY 2 & ADD.
-2x+y=4
2X+2Y=2
--------------
3Y=6
Y=6/3
Y=2 ANS.
X+2=1
X=1-2
X=-1 ANS.
PROOF:
-2*-1+2=4
2+2=4
4=4