Question

How do solve the following linear system?: `7x+3y=27 , 7x-2y=8`?

Answer 1

`x = 78/35;y = 19/5`

Explanation:

We can begin by substracting the 2nd line to the 1st one and then it goes on by itself.

`7x + 3y = 27,7x-2y = 8 iff 5y = 19,7x-2y = 8 iff y = 19/5,7x = 8 + 2*19/5 iff y = 19/5,7x = 78/5`