solve this system of linear equations. Separate the x- and y-values with a comma.

6x + 20y = -62
3x - 9y = -12

Question

solve this system of linear equations. Separate the x- and y-values with a comma.

6x + 20y = -62
3x - 9y = -12

anonymous · Answer

are you familiar with substitution and elimination?

joftheworld · Answer

yes, but this one confuses me because they're all different x and y values..

anonymous · Answer

alright lets find x first pick a equation to find x in

anonymous · Answer

lets do the second one cuz it's a bit easier

anonymous · Answer

3x-9(0)=-12

anonymous · Answer

can you solve that for me?

joftheworld · Answer

x=-4 ?

anonymous · Answer

yes do you understand where the 0 came from

joftheworld · Answer

no I was wondering about that..

anonymous · Answer

whenever we do substitution we substitute whatever value we want to find in this case x we would substitute 0 in for y if we were  finding y we would substitute 0 in for x

anonymous · Answer

now we take x=-4 and substitute that into an equation

joftheworld · Answer

-12 - 9y = -12 ?