1.38-(-2f)=5.38

Solution for 1.38-(-2f)=5.38 equation:

Simplifying
1.38 + -1(-2f) = 5.38

Remove parenthesis around (-2f)
1.38 + -1 * -2f = 5.38

Multiply -1 * -2
1.38 + 2f = 5.38

Solving
1.38 + 2f = 5.38

Solving for variable 'f'.

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

Add '-1.38' to each side of the equation.
1.38 + -1.38 + 2f = 5.38 + -1.38

Combine like terms: 1.38 + -1.38 = 0.00
0.00 + 2f = 5.38 + -1.38
2f = 5.38 + -1.38

Combine like terms: 5.38 + -1.38 = 4
2f = 4

Divide each side by '2'.
f = 2

Simplifying
f = 2