Question

How to use an elimination strategy to solve the linear system:

5/3x +1/4y = 10
1/3x + 1/2y = 5

Answer 1

since 1/2 is 2(1/4), multiply the top by 2o to get

10/3 x + 1/2 y = 20
Then 1/2 y = 20 - 10/3 x

Plug that into the 2nd equation and you have

1/3 x + (20 - 10/3 x) = 5

Answer 2

X= -5/9