21=2(3n+7)+15n

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Solution for 21=2(3n+7)+15n equation:


Simplifying
21 = 2(3n + 7) + 15n

Reorder the terms:
21 = 2(7 + 3n) + 15n
21 = (7 * 2 + 3n * 2) + 15n
21 = (14 + 6n) + 15n

Combine like terms: 6n + 15n = 21n
21 = 14 + 21n

Solving
21 = 14 + 21n

Solving for variable 'n'.

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

Add '-21n' to each side of the equation.
21 + -21n = 14 + 21n + -21n

Combine like terms: 21n + -21n = 0
21 + -21n = 14 + 0
21 + -21n = 14

Add '-21' to each side of the equation.
21 + -21 + -21n = 14 + -21

Combine like terms: 21 + -21 = 0
0 + -21n = 14 + -21
-21n = 14 + -21

Combine like terms: 14 + -21 = -7
-21n = -7

Divide each side by '-21'.
n = 0.3333333333

Simplifying
n = 0.3333333333

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