4z+12=7z-28

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Solution for 4z+12=7z-28 equation:


Simplifying
4z + 12 = 7z + -28

Reorder the terms:
12 + 4z = 7z + -28

Reorder the terms:
12 + 4z = -28 + 7z

Solving
12 + 4z = -28 + 7z

Solving for variable 'z'.

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

Add '-7z' to each side of the equation.
12 + 4z + -7z = -28 + 7z + -7z

Combine like terms: 4z + -7z = -3z
12 + -3z = -28 + 7z + -7z

Combine like terms: 7z + -7z = 0
12 + -3z = -28 + 0
12 + -3z = -28

Add '-12' to each side of the equation.
12 + -12 + -3z = -28 + -12

Combine like terms: 12 + -12 = 0
0 + -3z = -28 + -12
-3z = -28 + -12

Combine like terms: -28 + -12 = -40
-3z = -40

Divide each side by '-3'.
z = 13.33333333

Simplifying
z = 13.33333333

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