Question

How to solve 6/12=2/c

Answer 1

$\frac{6}{12} = \frac{2}{c} \\ \\ \frac{1}{2} = \frac{2}{c} \ / \ simplify \\ \\ \frac{1}{2} c = 2 \ / \ multiply \ each \ side \ by \ c \\ \\ \frac{c}{2} = 2 \ / \ simplify \\ \\ c = 2 \times 2 \ / \ multiply \ each \ side \ by \ 2 \\ \\ c = 4 \ / \ simplify$

The final result is c = 4.

Answer 2

All you have to do here is some simplifying. 

6/12 = what
6 divided by 12 = 1/2

1/2 = 2/4

There! We have our missing value

6/12 = 2/4

Answer: c = 4