7x−y=7 x+2y=6 ​

Question

what is the system of equation in fraction

Answer 1

You are trying to solve this system of linear equations? Here is one way to do it.

(A) 7x - y = 7

(B) x + 2y = 6

Multiply equation A by 2:

(A') 14x -2y = 14

Now add A' to equation B:

14x -2y + x + 2y = 14 + 6

15x = 20

x = 20/15 = 4/3

Now just plug in the value for x ... we'll use Equation B.

x + 2y = 6

4/3 + 2y = 6

2y = 6 - 4/3

2y = (18-4) / 3

2y = 14/3

y = 7/3