Systems Of Equations By Elimination

Question

Elimination Form:
2x/3 - 4y/5 = 1 and 3x-y=-7

Answer 1

solve for y, in second equation, then substitute into first equation...the latter should be simplfied by multiplying throughout by 15, which is the LCD

Answer 2

2x/3 - 4y/5 = 1

10x - 12y = 15

 

3x - y = -7

36x - 12y = -84

10x - 12y = 15

26x          = 99

 

Can you complete?