4+7z-2z=30

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Solution for 4+7z-2z=30 equation: 


Simplifying
4 + 7z + -2z = 30

Combine like terms: 7z + -2z = 5z
4 + 5z = 30

Solving
4 + 5z = 30

Solving for variable 'z'.

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

Add '-4' to each side of the equation.
4 + -4 + 5z = 30 + -4

Combine like terms: 4 + -4 = 0
0 + 5z = 30 + -4
5z = 30 + -4

Combine like terms: 30 + -4 = 26
5z = 26

Divide each side by '5'.
z = 5.2

Simplifying
z = 5.2

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