3[Z+7]=21

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Solution for 3[Z+7]=21 equation: 


Simplifying
3[Z + 7] = 21

Reorder the terms:
3[7 + Z] = 21
[7 * 3 + Z * 3] = 21
[21 + 3Z] = 21

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

Combine like terms: 21 + -21 = 0
0 + 3Z = 21 + -21
3Z = 21 + -21

Combine like terms: 21 + -21 = 0
3Z = 0

Solving
3Z = 0

Solving for variable 'Z'.

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

Divide each side by '3'.
Z = 0

Simplifying
Z = 0

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