4(z+3)=2z-15

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Solution for 4(z+3)=2z-15 equation:


Simplifying
4(z + 3) = 2z + -15

Reorder the terms:
4(3 + z) = 2z + -15
(3 * 4 + z * 4) = 2z + -15
(12 + 4z) = 2z + -15

Reorder the terms:
12 + 4z = -15 + 2z

Solving
12 + 4z = -15 + 2z

Solving for variable 'z'.

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

Add '-2z' to each side of the equation.
12 + 4z + -2z = -15 + 2z + -2z

Combine like terms: 4z + -2z = 2z
12 + 2z = -15 + 2z + -2z

Combine like terms: 2z + -2z = 0
12 + 2z = -15 + 0
12 + 2z = -15

Add '-12' to each side of the equation.
12 + -12 + 2z = -15 + -12

Combine like terms: 12 + -12 = 0
0 + 2z = -15 + -12
2z = -15 + -12

Combine like terms: -15 + -12 = -27
2z = -27

Divide each side by '2'.
z = -13.5

Simplifying
z = -13.5

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