3(5z+2)-7=104

Solution for 3(5z+2)-7=104 equation:

Simplifying
3(5z + 2) + -7 = 104

Reorder the terms:
3(2 + 5z) + -7 = 104
(2 * 3 + 5z * 3) + -7 = 104
(6 + 15z) + -7 = 104

Reorder the terms:
6 + -7 + 15z = 104

Combine like terms: 6 + -7 = -1
-1 + 15z = 104

Solving
-1 + 15z = 104

Solving for variable 'z'.

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

Add '1' to each side of the equation.
-1 + 1 + 15z = 104 + 1

Combine like terms: -1 + 1 = 0
0 + 15z = 104 + 1
15z = 104 + 1

Combine like terms: 104 + 1 = 105
15z = 105

Divide each side by '15'.
z = 7

Simplifying
z = 7