3+13=f

Solution for 3+13=f equation:

Simplifying
3 + 13 = f

Combine like terms: 3 + 13 = 16
16 = f

Solving
16 = f

Solving for variable 'f'.

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

Add '-1f' to each side of the equation.
16 + -1f = f + -1f

Combine like terms: f + -1f = 0
16 + -1f = 0

Add '-16' to each side of the equation.
16 + -16 + -1f = 0 + -16

Combine like terms: 16 + -16 = 0
0 + -1f = 0 + -16
-1f = 0 + -16

Combine like terms: 0 + -16 = -16
-1f = -16

Divide each side by '-1'.
f = 16

Simplifying
f = 16