Question

Someone Helpppp???!!! Step by step to solve?
How many solutions does it have???
x-4y=12 and 5x-20y=60

Answer 1

First x - 4y = 12:

Get Y on one side, X on the other. to do that, we add 4y to both sides.

x - 4y + 4y = 12 + 4y

now we have

x = 12 + 4y
and we can't simplify it anymore, so we go to the other one.

5x-20y=60

Same as before, but now we want to put the Y value alone, so we subtract both sides by 5x

5x -20y - 5x = 60 -5x

and we get.

-20y = 60 -5x

Now lets get rid of the 20 on the y, by dividing by 20 and we get:

-20y/20 = (60 -5x)/20

which is:

-y = 3 - 1/4x

Not fully simplified because of the minus behind the y, so lets multiply it all by -1 and get rid of it:

y = -3 + 1/4x

Answer 2

Do you know what to do next?

Answer 3

no honestly not .. im really bad at math . i have to look at
what u typed so i can write it down

Answer 4

so wait what is next

Answer 5

i just read the msg

Answer 6

see your private messages, i'll explain

Answer 7

let's use substitution
from the 1st eqn x = 12 + 4y
put this in the 2nd eqn
5x - 20y = 60
5 (12 + 4y) - 20y = 60

to graph eqn 1 when x = 0 what is y when y = 0 what is x (0, -3) and (12, 0)
to graph eqn 2 (0, -5) and (12, 0)
find where they meet
only 1 solution

Answer 8

do u have algebra 2?