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

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


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

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

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

Multiply (1 + 3z) * (7 + z)
(1(7 + z) + 3z * (7 + z)) = 0
((7 * 1 + z * 1) + 3z * (7 + z)) = 0
((7 + 1z) + 3z * (7 + z)) = 0
(7 + 1z + (7 * 3z + z * 3z)) = 0
(7 + 1z + (21z + 3z2)) = 0

Combine like terms: 1z + 21z = 22z
(7 + 22z + 3z2) = 0

Solving
7 + 22z + 3z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(7 + z)(1 + 3z) = 0

Subproblem 1

Set the factor '(7 + z)' equal to zero and attempt to solve: Simplifying 7 + z = 0 Solving 7 + z = 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 + z = 0 + -7 Combine like terms: 7 + -7 = 0 0 + z = 0 + -7 z = 0 + -7 Combine like terms: 0 + -7 = -7 z = -7 Simplifying z = -7

Subproblem 2

Set the factor '(1 + 3z)' equal to zero and attempt to solve: Simplifying 1 + 3z = 0 Solving 1 + 3z = 0 Move all terms containing z to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 3z = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 3z = 0 + -1 3z = 0 + -1 Combine like terms: 0 + -1 = -1 3z = -1 Divide each side by '3'. z = -0.3333333333 Simplifying z = -0.3333333333

Solution

z = {-7, -0.3333333333}

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