-5j-(-7j)-13j-(-6)=-20

Solution for -5j-(-7j)-13j-(-6)=-20 equation:

Simplifying
-5j + -1(-7j) + -13j + -1(-6) = -20

Remove parenthesis around (-7j)
-5j + -1 * -7j + -13j + -1(-6) = -20

Multiply -1 * -7
-5j + 7j + -13j + -1(-6) = -20

Multiply -1 * -6
-5j + 7j + -13j + 6 = -20

Reorder the terms:
6 + -5j + 7j + -13j = -20

Combine like terms: -5j + 7j = 2j
6 + 2j + -13j = -20

Combine like terms: 2j + -13j = -11j
6 + -11j = -20

Solving
6 + -11j = -20

Solving for variable 'j'.

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

Add '-6' to each side of the equation.
6 + -6 + -11j = -20 + -6

Combine like terms: 6 + -6 = 0
0 + -11j = -20 + -6
-11j = -20 + -6

Combine like terms: -20 + -6 = -26
-11j = -26

Divide each side by '-11'.
j = 2.363636364

Simplifying
j = 2.363636364