Question

If you were to solve the following system by substitution, what would be the best variable to solve for and from what equation?
3x+6y=9
2x-10y=13

a)x in first equation
b)x in second equation << i think its this just making sure
c)y in first equation
d)y in second equation

Answer 1

why you think so ?

Answer 2

well it is about which would be the best variable
to me using 2x-10=13 would be easier

Answer 3

you know you can first simplify 3x+6y=9
and then you would try to find which one will be easier

Answer 4

D: okay ill try that :)

Answer 5

okay so when simplified it become x+2y=3?

Answer 6

right, now which ones easy to isolate x?
x+2y = 3
or 2x-10y =13 ?

Answer 7

the first ....

Answer 8

now you got it :)

Answer 9

:D thanks

Answer 10

welcome ^_^