4(5+9z)=-31

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Solution for 4(5+9z)=-31 equation: 


Simplifying
4(5 + 9z) = -31
(5 * 4 + 9z * 4) = -31
(20 + 36z) = -31

Solving
20 + 36z = -31

Solving for variable 'z'.

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

Add '-20' to each side of the equation.
20 + -20 + 36z = -31 + -20

Combine like terms: 20 + -20 = 0
0 + 36z = -31 + -20
36z = -31 + -20

Combine like terms: -31 + -20 = -51
36z = -51

Divide each side by '36'.
z = -1.416666667

Simplifying
z = -1.416666667

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