7z-3=40

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Solution for 7z-3=40 equation: 


Simplifying
7z + -3 = 40

Reorder the terms:
-3 + 7z = 40

Solving
-3 + 7z = 40

Solving for variable 'z'.

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

Add '3' to each side of the equation.
-3 + 3 + 7z = 40 + 3

Combine like terms: -3 + 3 = 0
0 + 7z = 40 + 3
7z = 40 + 3

Combine like terms: 40 + 3 = 43
7z = 43

Divide each side by '7'.
z = 6.142857143

Simplifying
z = 6.142857143

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