(7z+1)(3)=

Solution for (7z+1)(3)= equation:

Simplifying
(7z + 1)(3) = 0

Reorder the terms:
(1 + 7z)(3) = 0

Reorder the terms for easier multiplication:
3(1 + 7z) = 0
(1 * 3 + 7z * 3) = 0
(3 + 21z) = 0

Solving
3 + 21z = 0

Solving for variable 'z'.

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

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

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

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

Divide each side by '21'.
z = -0.1428571429

Simplifying
z = -0.1428571429