3(5+z)=

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Solution for 3(5+z)= equation: 


Simplifying
3(5 + z) = 0
(5 * 3 + z * 3) = 0
(15 + 3z) = 0

Solving
15 + 3z = 0

Solving for variable 'z'.

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

Add '-15' to each side of the equation.
15 + -15 + 3z = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 3z = 0 + -15
3z = 0 + -15

Combine like terms: 0 + -15 = -15
3z = -15

Divide each side by '3'.
z = -5

Simplifying
z = -5

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