Question

PLEASE CHECK ! MEDAL WILL BE GIVEN !!
Solve, using the substitution method.

y = 4x + 6
5x – y = 6
There are an infinite number of solutions.
There is no solution.
(18, 12)
(12, 54)
ANSWER- A ? ?

Answer 1

5x – y = 6

5x – ( y ) = 6

5x – ( 4x + 6 ) = 6 ... plug in y = 4x + 6 (ie replace y with 4x+6)

5x - 4x - 6 = 6

...
...
...

x = ???

Answer 2

-6 ?

Answer 3

what is 5x - 4x equal to?

Answer 4

1x ? lol

Answer 5

or just x, good

Answer 6

so we have x - 6 = 6 now

Answer 7

what's the next step?

Answer 8

multiply both sides by 6 ?

Answer 9

what operation undoes subtraction?

Answer 10

i really dont know and im runing out of time is there a chance maybe if i can just get an answer? please ? ?

Answer 11

you have to add 6 to both sides to undo the -6

what do you get when you do that?

Answer 12

12

Answer 13

so x = 12

now plug this into y = 4x+6 to get

y = 4x + 6

y = 4*12+6

y = 48+6

y = 54

Answer 14

therefore, x = 12 and y = 54

Answer 15

thanks you so much

Answer 16

you're welcome