Question

50 points, need help ASAP

Solve this system of equations, then determine what y equals.
x + 5y= 7
2x + 4y = -4


y=-18
y=3
y=8
y=-8

Answer 1

Answer:
`y = 3`

1. First, solve for unknown x.

`(x+5y=7)2`

2. Balance the equation.

`2x+10y=14`

`\mathrm {2x + 4y = -4}`

3. Now, we subtract.

`6y = 18`

`6` ×
`3 = 18`

4. Finally, divide.

`18/6=3`

Answer 2

(x+5y=7)2
2x+10y=14
2x + 4y = -4
Subtract
6y = 18
Divide by 6
Y = 3