Ellason wants to solve the following system using the elimination method:

5x + 2y = 30
x + y = 8

What number should the equation x + y = 8 be multiplied by to eliminate y?

2
–2
5
–5

Question

Ellason wants to solve the following system using the elimination method:

5x + 2y = 30
x + y = 8

What number should the equation x + y = 8 be multiplied by to eliminate y? 

 
 	
	2
	–2
	5
	–5

crystal_bliss · Answer

@misty1212  plz help me

misty1212 · Answer

HI!!

crystal_bliss · Answer

hello i need help

misty1212 · Answer

you have $2y$ in the first equation right? and just $y$ in the second one

misty1212 · Answer

so if you multiply the second one all the way across by $-2$ you will get $$5x+2y=30\
-2x-2y=-16$$ then when you add the y terms will go bye bye

misty1212 · Answer

that is called "elimination" because it will "eliminate" the y

misty1212 · Answer

you got that?

crystal_bliss · Answer

so my final answer would be -2?

misty1212 · Answer

yes if you multiply by -2 the y's will go

misty1212 · Answer

Students are not cheaters! We just really enjoy having the same answers. 
lolz

crystal_bliss · Answer

thank you very much misty! your awesome! >_>

misty1212 · Answer

$$\color\magenta\heartsuit$$

crystal_bliss · Answer

oh haha you read my profile lol!!! XD