(8+4)+9=8+(4+9)

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Solution for (8+4)+9=8+(4+9) equation: 


Simplifying
(8 + 4) + 9 = 8 + (4 + 9)

Combine like terms: 8 + 4 = 12
(12) + 9 = 8 + (4 + 9)
12 + 9 = 8 + (4 + 9)

Combine like terms: 12 + 9 = 21
21 = 8 + (4 + 9)

Combine like terms: 4 + 9 = 13
21 = 8 + (13)
21 = 8 + 13

Combine like terms: 8 + 13 = 21
21 = 21

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

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

Combine like terms: 21 + -21 = 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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