Question

Solve the following simultaneous equations 5x+2y= -15
x+2y=5

Answer 1

Explanation:

5x+2y=-15

Step 1: Add -2y to both sides.

5x+2y+−2y=−15+−2y

5x=−2y−15

Step 2: Divide both sides by 5

`(5x)/(5)`=
`(-2y-15)/(5)`

x=
`(-2-15)/(5)`

x+2y=5

Step 1: Add -x to both sides.

x+2y+−x=5+−x

2y=−x+5

Step 2: Divide both sides by 2.

`(2y)/(2)`=
`(-x+5)/(2)`

y=
`(-x+5)/(2)`

Answer 2

(x, y) = (-5, 5)