Question

Solve the system:


x+4y=1


3x+5y=10

Answer 1

`x=6.25\\y=-1.25`

Explanation:

`3x+5y=10\\x+3y=1\\\\`

Second equation times 3:

`3x+9y=3`

1st equation minus equation above:

`-4y=7\\y=-7/4`

Insert to equation:

`3x+(-35)/(4)=10\\12x-35=40\\12x=75\\x=75/12=6.25`