Question

How do you solve the following system?: `4x-5y=5 , 7y=4- 2x`

Answer 1

x = `+-`1.35 ; y = `+-` 0.18.

Explanation:

`4x-5=5y`, `y=0.8x-1`.
`y=(-2x)/7+4/7`.

graph{(y-0.8x+1)(y+2/7x-4/7)=0 [-1, 4, -1.25, 1.25]} .

x = `+-`1.35 ; y = `+-` 0.18.

JUST SHOWING HOW GRAPHS ARE USEFUL.