Solve the system:y-3x=5
y+x=3 write your answer as an ordered pair (x,y). Change fractions to decimals if needed.

Question

Solve the system:y-3x=5
y+x=3 write your answer as an ordered pair (x,y). Change fractions to decimals if needed.

saifoo.khan · Answer

So where are you stuck?

anonymous · Answer

i dont understand how to do it at all..... i was having surgery when they were teaching it......

anonymous · Answer

i have about 9 more like it to... so i need to understand how to do it...

anonymous · Answer

so i know you have to make one of the y's a negative so you can cancel them out and find out x

anonymous · Answer

so i multiplied the first one by -1 and got
-y+3x=-5
y+x=3
so the y's cancel each other out now than you add everything
so it is 4x=-1
and right here i get stuck i dont know how to get the x alone

saifoo.khan · Answer

Sorry i was in another tab.

saifoo.khan · Answer

You just did 1 mistake.
-5 + 3 = -2

You wrote -1

anonymous · Answer

oh oops...

anonymous · Answer

so how do you get the x alone now

saifoo.khan · Answer

so it is 4x=-2
             x = -2/4
             x = -1/2

Agree?

anonymous · Answer

wait so you just divide the 4 with the -2 to get the x alone? correct

saifoo.khan · Answer

Yes sir.

anonymous · Answer

wait i got 1 then..

saifoo.khan · Answer

1? Where?

anonymous · Answer

wait isn't 4/-2 =1

saifoo.khan · Answer

it's -2/4 not 4/-2

And btw 4/-2 is -2.

anonymous · Answer

haha ok thank you tons!

saifoo.khan · Answer

Lol. You're welcome. :)