Question

Solve.

4over7=21overx-3 i need help with this

Answer 1

\[4/7 = 21/x-3 \]

Answer 2

yea just like that but i need help

Answer 3

Well, we cross mulitply

Answer 4

Do you know how to do that?

Answer 5

can u help me

Answer 6

Cross multiply:

4(x - 3) = 4x - 12
7•21 = 147

Answer 7

http://www.youtube.com/watch?v=Uv_hPQfJE4g

Answer 8

This should help you :3

Answer 9

4x - 12 = 147

Answer 10

Now we can isolate x.

Answer 11

First add 12 from both sides to remove the 12

Answer 12

4x - 12 + 12 = 147 + 12

4x = 159

Now divide 4 from bot sides:

4x/4 = 159/4

x = 39.75

Answer 13

It's solved now . . .

Answer 14

Your welcome . . .

Answer 15

Lol nvm x3

Answer 16

thank u