Question

How do you solve the following system: `x+y=4 , x-10y=10`?

Answer 1

`(x,y)=(50/11,-6/11)`

Explanation:

`y=4-x` solve for y in terms of x
`x-10(4-x)=10` plug into other equation
`x-40+10x=10` distribute
`11x=50`
`x=50/11`
`y=44/11-50/11`
`y=-6/11`