Question

What is the result of adding these two equations?

−5x−9y
5x−9y
​

=3
=−2

Answer 1

`-5x-9y=3+5x-9y=-2`

Consider the first equation. Subtract 5x from both sides.

`-5x-9y-5x=3-9y`

Combine -5xand -5x to get -10x

`-10x-9y=3-9y`

Add 9y to both sides.

`-10x-9y+9y=3`

Combine -9y and 9y to get 0

`-10x=3`

Divide both sides by -10

`x=-(3)/(10)`

Consider the second equation. Insert the known values of variables into the equation.

`3+5\huge \text(- (3)/(10) \huge \text)-9y = -2`

after solving a lot you'll get.
`y=(7)/(10)`

`\bold{so} \ \bold{x}=\bold{(3)/(10)}`

`\bold{y}=\bold{(7)/(10)}`