Question

Use substitution method
3x +4y+175x-2y=11​

Answer 1

`3x +4y+175x-2y=11`

`4y-2y+175x+3x=11`

`2y+178x=11`

`2y=11-178x`

`y=(11-178x)/(2)`

`y=-89x+(11)/(2)`

`178x=-2y+11`

`x=(-2y+11)/(178)`

`x=(-1)/(89) y+(11)/(178)`