30n-21=189

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Solution for 30n-21=189 equation: 


Simplifying
30n + -21 = 189

Reorder the terms:
-21 + 30n = 189

Solving
-21 + 30n = 189

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 + 30n = 189 + 21

Combine like terms: -21 + 21 = 0
0 + 30n = 189 + 21
30n = 189 + 21

Combine like terms: 189 + 21 = 210
30n = 210

Divide each side by '30'.
n = 7

Simplifying
n = 7

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