SOLUTION: solve using the elimination method 0.3x-0.2y=4 0.5x+0.3y=1 the solution is (___,___)

Algebra ->  Rational-functions -> SOLUTION: solve using the elimination method 0.3x-0.2y=4 0.5x+0.3y=1 the solution is (___,___)      Log On


   

Question 324050: solve using the elimination method
0.3x-0.2y=4
0.5x+0.3y=1
the solution is (___,___)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
0.3x-0.2y=4
1.3x-2y=40
.
.
0.5x%2B0.3y=1
2.5x%2B3y=10
Multiply eq.1 by (3) and eq. 2 by (2) and add them,
9x-6y%2B10x%2B6y=120%2B20
19x=140
highlight%28x=140%2F19%29
.
.
.
Then use either equation to solve for y.
5%28140%2F19%29%2B3y=10
700%2F19%2B3y=190%2F19
3y=-510%2F19
highlight%28y=-170%2F19%29