Question

2s-3t=120,
-14s+91t =-840
@Godlovesme

Answer 1

elimination?

Answer 2

multiply both equations by 7 then subtract

Answer 3

i'll let @ertdre help :)

Answer 4

help u***

Answer 5

y would I multiply them by 7

Answer 6

@Godlovesme come back

Answer 7

It says elimination and substitution

Answer 8

do u have to do both? or pick one

Answer 9

any

Answer 10

are you there @Godlovesme

Answer 11

yes sorry which one do u prefer?

Answer 12

I want to get elimination down pact...so lets do elimination again

Answer 13

alright the reason why we have to multiply the 1st equation by 7 is to make the 2s 114s and we can cancel out with the -ve 14s from the 2nd equation
but we only multiply the 1st one so far so good?

Answer 14

So I got (7) 2s +3t=120
14s + 21t = -840
The 14s will cancel out on the next line...what will I do with the 21 and 91? @Godlovesme

Answer 15

Not trying to over do it but are you still there @Godlovesme

Answer 16

yes sorry again....