-[10z(20z+7)]=

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Solution for -[10z(20z+7)]= equation: 


Simplifying
-1[10z(20z + 7)] = 0

Reorder the terms:
-1[10z(7 + 20z)] = 0
-1[(7 * 10z + 20z * 10z)] = 0
-1[(70z + 200z2)] = 0
[70z * -1 + 200z2 * -1] = 0
[-70z + -200z2] = 0

Solving
-70z + -200z2 = 0

Solving for variable 'z'.

Factor out the Greatest Common Factor (GCF), '-10z'.
-10z(7 + 20z) = 0

Ignore the factor -10.

Subproblem 1
Set the factor 'z' equal to zero and attempt to solve:

Simplifying
z = 0

Solving
z = 0

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

Simplifying
z = 0

Subproblem 2
Set the factor '(7 + 20z)' equal to zero and attempt to solve:

Simplifying
7 + 20z = 0

Solving
7 + 20z = 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 + 20z = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 20z = 0 + -7
20z = 0 + -7

Combine like terms: 0 + -7 = -7
20z = -7

Divide each side by '20'.
z = -0.35

Simplifying
z = -0.35
Solution
z = {0, -0.35}

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