73=4z+21

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Solution for 73=4z+21 equation:


Simplifying
73 = 4z + 21

Reorder the terms:
73 = 21 + 4z

Solving
73 = 21 + 4z

Solving for variable 'z'.

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

Add '-4z' to each side of the equation.
73 + -4z = 21 + 4z + -4z

Combine like terms: 4z + -4z = 0
73 + -4z = 21 + 0
73 + -4z = 21

Add '-73' to each side of the equation.
73 + -73 + -4z = 21 + -73

Combine like terms: 73 + -73 = 0
0 + -4z = 21 + -73
-4z = 21 + -73

Combine like terms: 21 + -73 = -52
-4z = -52

Divide each side by '-4'.
z = 13

Simplifying
z = 13

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