Question

How do you solve the system of equations `12x-5y=-6` and `-4x+7y=9`?

Answer 1

`12x - 5y = -6`...1
`-4x + 7y = 9`.....2

Multiply equation 2 with 3 and add to equation 1
So we get,
`12x-5y-12x+21y=(-6+27)`
Or, `16y=21`
Or,`y=(21/9)`
Put the value of y in 1,
You get,`x = (3/64)`