Question

How do you solve the simultaneous equations `2x+3y= -3` and `3x-2y=28`?

Answer 1

I found:
`x=6`
`y=-5`

Explanation:

You could multiply the first equation by `2` and the second by `3` getting:
`{4x+6y=-6`
`{9x-6y=84` add the two together (in columns):
`13x+0=78`
`x=78/13=6`
substitute this value back into the first equation:
`2*6+3y=-3`
`3y=-15`
`y=-15/3=-5`