could someone please add this system of equations by addition method:

x-5y=-4
-6x-5y=-46

Question

could someone please add this system of equations by addition method:

x-5y=-4
-6x-5y=-46

karatechopper · Answer

Ah, Elimination.
Pick, do you want the x's or the y's to be eliminated?

anonymous · Answer

the x's! @karatechopper

karatechopper · Answer

Ok!
So, in order to get rid of the x's lets see your two victims.
x and -6x.
What do you think you should do to make all of the x's go away COMPLETELY?

anonymous · Answer

hmm, i do not have any idea, I suck at math :/ @karatechopper

karatechopper · Answer

x-5y=-4
-6x-5y=-46

6x-30y=-24
-6x-5y=-46
-35y=-70
y=2

Now use substitution
y=2
x-5y=-4
you can really chose any equation.

x-5(2)=-4
5 x 2=10
x-10=-4
add 10 on both sides.
x-10=-4
 +10  +10
-----------
x=6

Therefore
x=6, y=2

karatechopper · Answer

Understood?

karatechopper · Answer

Ask any questions you have please :)x.