callaso515
contestada

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

Respuesta :

meowmeow223334
(x+5y=7)2
2x+10y=14
2x + 4y = -4
Subtract
6y = 18
Divide by 6
Y = 3

Answer: [tex]y = 3[/tex]

1. First, solve for unknown x.

[tex](x+5y=7)2[/tex]

2. Balance the equation.

[tex]2x+10y=14[/tex]

[tex]\mathrm {2x + 4y = -4}[/tex]

3. Now, we subtract.

[tex]6y = 18[/tex]

[tex]6[/tex] × [tex]3 = 18[/tex]

4. Finally, divide.

[tex]18/6=3[/tex]

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