9=7z-13

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Solution for 9=7z-13 equation:


Simplifying
9 = 7z + -13

Reorder the terms:
9 = -13 + 7z

Solving
9 = -13 + 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.
9 + -7z = -13 + 7z + -7z

Combine like terms: 7z + -7z = 0
9 + -7z = -13 + 0
9 + -7z = -13

Add '-9' to each side of the equation.
9 + -9 + -7z = -13 + -9

Combine like terms: 9 + -9 = 0
0 + -7z = -13 + -9
-7z = -13 + -9

Combine like terms: -13 + -9 = -22
-7z = -22

Divide each side by '-7'.
z = 3.142857143

Simplifying
z = 3.142857143

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