3z+6=7z-30

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Solution for 3z+6=7z-30 equation:


Simplifying
3z + 6 = 7z + -30

Reorder the terms:
6 + 3z = 7z + -30

Reorder the terms:
6 + 3z = -30 + 7z

Solving
6 + 3z = -30 + 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.
6 + 3z + -7z = -30 + 7z + -7z

Combine like terms: 3z + -7z = -4z
6 + -4z = -30 + 7z + -7z

Combine like terms: 7z + -7z = 0
6 + -4z = -30 + 0
6 + -4z = -30

Add '-6' to each side of the equation.
6 + -6 + -4z = -30 + -6

Combine like terms: 6 + -6 = 0
0 + -4z = -30 + -6
-4z = -30 + -6

Combine like terms: -30 + -6 = -36
-4z = -36

Divide each side by '-4'.
z = 9

Simplifying
z = 9

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