Question

I need help on this problem. Solve for c

Answer 1

First you need to multiply each side by 2

X - C. X - C = d * 2
-------- = d --->
2
Then add X from each side

C = d * 2 + X

Answer 2

Remember, you can do anything to an equation as long as you do it to both sides


$\frac{x-c}{2}=d$
multiply both sides by 2
x-c=2d
minus x from both sides
-c=2d-x
multiplly both sides by -1
c=x-2d