77=7(3n+4)+7(-3n+7)

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Solution for 77=7(3n+4)+7(-3n+7) equation: 


Simplifying
77 = 7(3n + 4) + 7(-3n + 7)

Reorder the terms:
77 = 7(4 + 3n) + 7(-3n + 7)
77 = (4 * 7 + 3n * 7) + 7(-3n + 7)
77 = (28 + 21n) + 7(-3n + 7)

Reorder the terms:
77 = 28 + 21n + 7(7 + -3n)
77 = 28 + 21n + (7 * 7 + -3n * 7)
77 = 28 + 21n + (49 + -21n)

Reorder the terms:
77 = 28 + 49 + 21n + -21n

Combine like terms: 28 + 49 = 77
77 = 77 + 21n + -21n

Combine like terms: 21n + -21n = 0
77 = 77 + 0
77 = 77

Add '-77' to each side of the equation.
77 + -77 = 77 + -77

Combine like terms: 77 + -77 = 0
0 = 77 + -77

Combine like terms: 77 + -77 = 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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