(0+3)(z-7)=0

Solution for (0+3)(z-7)=0 equation:

Simplifying
(0 + 3)(z + -7) = 0

Combine like terms: 0 + 3 = 3
(3)(z + -7) = 0

Reorder the terms:
3(-7 + z) = 0
(-7 * 3 + z * 3) = 0
(-21 + 3z) = 0

Solving
-21 + 3z = 0

Solving for variable 'z'.

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

Add '21' to each side of the equation.
-21 + 21 + 3z = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 3z = 0 + 21
3z = 0 + 21

Combine like terms: 0 + 21 = 21
3z = 21

Divide each side by '3'.
z = 7

Simplifying
z = 7