21=.7n

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Solution for 21=.7n equation:


Simplifying
21 = 0.7n

Solving
21 = 0.7n

Solving for variable 'n'.

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

Add '-0.7n' to each side of the equation.
21 + -0.7n = 0.7n + -0.7n

Combine like terms: 0.7n + -0.7n = 0.0
21 + -0.7n = 0.0

Add '-21' to each side of the equation.
21 + -21 + -0.7n = 0.0 + -21

Combine like terms: 21 + -21 = 0
0 + -0.7n = 0.0 + -21
-0.7n = 0.0 + -21

Combine like terms: 0.0 + -21 = -21
-0.7n = -21

Divide each side by '-0.7'.
n = 30

Simplifying
n = 30

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