Question

What is the value of s in the equation 3r = 10 + 5s, when r = 10?

4
8
100
200

Answer 1

3r = 10 + 5s

Plug in 10 for 'r':

3(10) = 10 + 5s

What's 3 * 10?

Answer 2

substitute 10 for r.

Answer 3

^^

Answer 4

@Rafyy Can you multiply 3 x 10?

Answer 5

this gets you to 3*10=10+5s .

Answer 6

30

Answer 7

Yes, then can you subtract 30 - 10?

Answer 8

Yes, so we have:

30 = 10 + 5s

Now subtract 10 to both sides, what's 30 - 10/

Answer 9

20

Answer 10

Yes, so we have 20 = 5s

What's 20 / 5?

Answer 11

Yup.

Answer 12

Divide 20 \(\div\) 5 now. :)

Answer 13

4!

Answer 14

Yes, that's our answer.

Answer 15

now you subtract 10 from both sides to cancel things out and to help isolate the variable.

Answer 16

lol i type so slow

Answer 17

THANKS GUYS!! =D