Question

How do you solve the system using the elimination method for 5x +5y= -7 and 7x -3= 11?

Answer 1

The second equation only has one variable (x) so the value of x can be found. This can then be substituted into the first equation to get a value for y

Explanation:

`7x- 3 = 11`
`7x = 11 + 3`
`x = 14 / 7`
`x = 2`

`5x +5y = -7`
`5*2 +5y = -7`
`5y = -7 -10`
`y = -17/5`
`y = -3.4`