4(6-z)+z=21

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Solution for 4(6-z)+z=21 equation:


Simplifying
4(6 + -1z) + z = 21
(6 * 4 + -1z * 4) + z = 21
(24 + -4z) + z = 21

Combine like terms: -4z + z = -3z
24 + -3z = 21

Solving
24 + -3z = 21

Solving for variable 'z'.

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

Add '-24' to each side of the equation.
24 + -24 + -3z = 21 + -24

Combine like terms: 24 + -24 = 0
0 + -3z = 21 + -24
-3z = 21 + -24

Combine like terms: 21 + -24 = -3
-3z = -3

Divide each side by '-3'.
z = 1

Simplifying
z = 1

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