7z+9=30

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Solution for 7z+9=30 equation: 


Simplifying
7z + 9 = 30

Reorder the terms:
9 + 7z = 30

Solving
9 + 7z = 30

Solving for variable 'z'.

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

Add '-9' to each side of the equation.
9 + -9 + 7z = 30 + -9

Combine like terms: 9 + -9 = 0
0 + 7z = 30 + -9
7z = 30 + -9

Combine like terms: 30 + -9 = 21
7z = 21

Divide each side by '7'.
z = 3

Simplifying
z = 3

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