3(4z+7)=15

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Solution for 3(4z+7)=15 equation:


Simplifying
3(4z + 7) = 15

Reorder the terms:
3(7 + 4z) = 15
(7 * 3 + 4z * 3) = 15
(21 + 12z) = 15

Solving
21 + 12z = 15

Solving for variable 'z'.

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

Add '-21' to each side of the equation.
21 + -21 + 12z = 15 + -21

Combine like terms: 21 + -21 = 0
0 + 12z = 15 + -21
12z = 15 + -21

Combine like terms: 15 + -21 = -6
12z = -6

Divide each side by '12'.
z = -0.5

Simplifying
z = -0.5

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