Question

How do you solve `2x + 2y = 3` and `x - 4y = -1`?

Answer 1

x = 1; y = 1/2

Explanation:

`2x+2y=3`
`x−4y=−1`
From the 2nd equation: `x=4y-1`
put this x to the 1st equation:
`2(4y-1)+2y=3`
`8y-2+2y=3`
`10y=5`
`y=1/2`

And on the end y put to the x:
`x=4*1/2-1=2-1=1`