7z+4-9=18

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Solution for 7z+4-9=18 equation:


Simplifying
7z + 4 + -9 = 18

Reorder the terms:
4 + -9 + 7z = 18

Combine like terms: 4 + -9 = -5
-5 + 7z = 18

Solving
-5 + 7z = 18

Solving for variable 'z'.

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

Add '5' to each side of the equation.
-5 + 5 + 7z = 18 + 5

Combine like terms: -5 + 5 = 0
0 + 7z = 18 + 5
7z = 18 + 5

Combine like terms: 18 + 5 = 23
7z = 23

Divide each side by '7'.
z = 3.285714286

Simplifying
z = 3.285714286

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