13=3+c

Solution for 13=3+c equation:

Simplifying
13 = 3 + c

Solving
13 = 3 + c

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '-1c' to each side of the equation.
13 + -1c = 3 + c + -1c

Combine like terms: c + -1c = 0
13 + -1c = 3 + 0
13 + -1c = 3

Add '-13' to each side of the equation.
13 + -13 + -1c = 3 + -13

Combine like terms: 13 + -13 = 0
0 + -1c = 3 + -13
-1c = 3 + -13

Combine like terms: 3 + -13 = -10
-1c = -10

Divide each side by '-1'.
c = 10

Simplifying
c = 10