Question

CAN SOMEONE HELP ME SOLVE THIS?

Answer 1

Solve, using the substitution method.

y – 3x = 7
21 + 9x = 3y
(Points : 1)

Answer 2

ok first find what y or what x equals in one of them

Answer 3

ditto

Answer 4

thank you :)

Answer 5

It doesnt @Daniellelovee

Answer 6

yes it does Im going to give you an example y+4x=16
to find y
you would 16-4x
so now y=16-4x

Answer 7

I got y=7+3x
21=3y-9x @Daniellelovee

Answer 8

ok now that you know y=7+3x then substitute that over the y value for 21 + 9x = 3y

Answer 9

28=6x+3y?

Answer 10

no you do 21 + 9x = 3(7+3x)
and now solve :)

Answer 11

okay I got a decimal

Answer 12

But im not sure if I did it correctly

Answer 13

I finished with 6x=19

Answer 14

I got 1

Answer 15

These are the choices
There is no solution.
There are an infinite number of solutions.
The solution is (1, 10)
The solution is (28, 0)

Answer 16

I think B because they are both the same equation :)

Answer 17

Thank you so much!

Answer 18

np :)

Answer 19

Can you help me with another problem?

Answer 20

@Daniellelovee

Answer 21

sure just make a new question and close this one

Answer 22

Alright