Question

How do you solve the system of equations `0.7x - 0.2y = - 1.9` and `0.5x - y = - 6.5`?

Answer 1

`x=1`
`y=6`

Explanation:

`7x-2y=-19`
`35x-10y=-95` ----(I)
`5x-10y=-65` ----(II)
Substituting (II) from (I),
`30x=30 or x=1`
Substituting value of x in (I),
`35-10y=-95`
`y=6`