How to do the substitution method on linear systems? The problem is2x-y=23,x-9=-1
x-9=-1x=9-1x=82(8)-y=2316- y=23 -y=23-16-y=7y=-7 check:2(8)-(-7)=2316+7=2323=23sorry, this is the one time where i did it for them .shame on me.
get a varible alone (bottom is eadiest) then plug it in for the top equation in parenthses then distribute and solve
I got what Olivia got.