3[n-7]=-30

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Solution for 3[n-7]=-30 equation:


Simplifying
3[n + -7] = -30

Reorder the terms:
3[-7 + n] = -30
[-7 * 3 + n * 3] = -30
[-21 + 3n] = -30

Solving
-21 + 3n = -30

Solving for variable 'n'.

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

Add '21' to each side of the equation.
-21 + 21 + 3n = -30 + 21

Combine like terms: -21 + 21 = 0
0 + 3n = -30 + 21
3n = -30 + 21

Combine like terms: -30 + 21 = -9
3n = -9

Divide each side by '3'.
n = -3

Simplifying
n = -3

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