Question

How do you solve the following linear system: # - 12x + y = 15 , 17y = 2x+7 #?

Answer 1

`x~=-1,079`

Explanation:

`-12x+y=15" "color(green)(y=15+12x)`
`17y=2x+7`
`17(color(green)(15+12x))=2x+7`
`17*15+17*12x=2x+7`
`225+204x=2x+7`
`204x-2x=7-225`
`202x=-218`
`x=-218/202`
`x~=-1,079`