7-13=-3z

Solution for 7-13=-3z equation:

Simplifying
7 + -13 = -3z

Combine like terms: 7 + -13 = -6
-6 = -3z

Solving
-6 = -3z

Solving for variable 'z'.

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

Add '3z' to each side of the equation.
-6 + 3z = -3z + 3z

Combine like terms: -3z + 3z = 0
-6 + 3z = 0

Add '6' to each side of the equation.
-6 + 6 + 3z = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 3z = 0 + 6
3z = 0 + 6

Combine like terms: 0 + 6 = 6
3z = 6

Divide each side by '3'.
z = 2

Simplifying
z = 2