Question

What is the value of x in the equation 3x –1/9 y = 18, when y = 27?

a)5
b)7
c)45
d)63

Answer 1

@freckles help?

Answer 2

have you replace y with 27?

Answer 3

also that says:
\[3x-\frac{1}{9}y=18\]

Answer 4

\[3x-\frac{1}{9}(27)=18 \text{ since } y=27\]
we solve for x now

Answer 5

let me know if you do not know how to do that
and I can give you the first step

Answer 6

so i do 1/9 x 27

Answer 7

also known as 27/9

Answer 8

27/9 = 3

Answer 9

yes

Answer 10

3x-3=18

Answer 11

So do i plug that in somewhere

Answer 12

you want to isolate the 3x term
do this by adding 3 on both sides

3x-3=18

3x-3+3=18+3
3x+0=18+3
3x=21

Answer 13

now there is one last step

Answer 14

21/3?

Answer 15

yep

Answer 16

7!

Answer 17

yes

Answer 18

actually just 7
but I know what you mean
7! actually means 7*6*5*4*3*2*1 :p

Answer 19

Lol :-)

Answer 20

What is the value of x in the equation 7x + 2y = 48 , when y = 3?

Answer 21

so first step replace y with 3

Answer 22

7x + 2(3) =48
&x + 6=48

Answer 23

right 7x+6=48

Answer 24

so then id - 6 on both sides?

Answer 25

then two more steps

Answer 26

yes

Answer 27

one more after

Answer 28

so 42 then divode by 7?

Answer 29

yep

Answer 30

And karol I sleep now

Answer 31

good luck on your math

Answer 32

Thanks!

Answer 33

welcome :)