Question

How do you solve the simultaneous equations `y = 3x + 1` and `2x + y = 6`?

Answer 1

I found:
`x=1`
`y=4`

Explanation:

You can substitute the first equation into the second for `y`:
you get:
`2x+color(red)(3x+1)=6`
`5x=5`
`x=5/5=1`
substitute into the first equation:
`y=3+1=4`