SOLUTION: 2x+3y=7 x-3y=8

Algebra.Com
Question 647943: 2x+3y=7
x-3y=8

Answer by rfer(16322)   (Show Source): You can put this solution on YOUR website!
2x+3y=7
x=3y+8
--------------
2(3y+8)+3y=7
6y+16+3y=7
9y=7-16
9y=-9
y=-9/9
y=-1
-----------
2x+3*-1=7
2x-3=7
2x=7+3
2x=10
x=10/2
x=5
-------------
x-3y=8
5-3*-1=8
5+3=8

RELATED QUESTIONS

elimination x+3y=14 2x-3y=-8 (answered by Alan3354)
elimination x+3y=14 2x-3y=-8 (answered by Alan3354,ewatrrr)
x+3y=5... (answered by jim_thompson5910)
2x+-3y-3z=5 x+3y=4... (answered by Boreal)
x=8+3y... (answered by edjones)
Eq. 1 - 2x + 3y = -7 Eq. 2 x = - 3y +... (answered by MathLover1)
-2x+3y=14... (answered by ilana)
2x+5y=3... (answered by checkley71)