9(n+7)=3(21+3n)

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Solution for 9(n+7)=3(21+3n) equation: 


Simplifying
9(n + 7) = 3(21 + 3n)

Reorder the terms:
9(7 + n) = 3(21 + 3n)
(7 * 9 + n * 9) = 3(21 + 3n)
(63 + 9n) = 3(21 + 3n)
63 + 9n = (21 * 3 + 3n * 3)
63 + 9n = (63 + 9n)

Add '-63' to each side of the equation.
63 + -63 + 9n = 63 + -63 + 9n

Combine like terms: 63 + -63 = 0
0 + 9n = 63 + -63 + 9n
9n = 63 + -63 + 9n

Combine like terms: 63 + -63 = 0
9n = 0 + 9n
9n = 9n

Add '-9n' to each side of the equation.
9n + -9n = 9n + -9n

Combine like terms: 9n + -9n = 0
0 = 9n + -9n

Combine like terms: 9n + -9n = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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