(6-z)(2z-7)=0

Solution for (6-z)(2z-7)=0 equation:

Simplifying
(6 + -1z)(2z + -7) = 0

Reorder the terms:
(6 + -1z)(-7 + 2z) = 0

Multiply (6 + -1z) * (-7 + 2z)
(6(-7 + 2z) + -1z * (-7 + 2z)) = 0
((-7 * 6 + 2z * 6) + -1z * (-7 + 2z)) = 0
((-42 + 12z) + -1z * (-7 + 2z)) = 0
(-42 + 12z + (-7 * -1z + 2z * -1z)) = 0
(-42 + 12z + (7z + -2z2)) = 0

Combine like terms: 12z + 7z = 19z
(-42 + 19z + -2z2) = 0

Solving
-42 + 19z + -2z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(-6 + z)(7 + -2z) = 0

Subproblem 1
Set the factor '(-6 + z)' equal to zero and attempt to solve:

Simplifying
-6 + z = 0

Solving
-6 + z = 0

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

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

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

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

Simplifying
z = 6
Subproblem 2
Set the factor '(7 + -2z)' equal to zero and attempt to solve:

Simplifying
7 + -2z = 0

Solving
7 + -2z = 0

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

Add '-7' to each side of the equation.
7 + -7 + -2z = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -2z = 0 + -7
-2z = 0 + -7

Combine like terms: 0 + -7 = -7
-2z = -7

Divide each side by '-2'.
z = 3.5

Simplifying
z = 3.5
Solution
z = {6, 3.5}