[4-(2-4(2-4)+6)]+3=-9

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Solution for [4-(2-4(2-4)+6)]+3=-9 equation: 


Simplifying
[4 + -1(2 + -4(2 + -4) + 6)] + 3 = -9

Combine like terms: 2 + -4 = -2
[4 + -1(2 + -4(-2) + 6)] + 3 = -9

Multiply -4 * -2
[4 + -1(2 + 8 + 6)] + 3 = -9

Combine like terms: 2 + 8 = 10
[4 + -1(10 + 6)] + 3 = -9

Combine like terms: 10 + 6 = 16
[4 + -1(16)] + 3 = -9

Multiply -1 * 16
[4 + -16] + 3 = -9

Combine like terms: 4 + -16 = -12
[-12] + 3 = -9
-12 + 3 = -9

Combine like terms: -12 + 3 = -9
-9 = -9

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

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

Combine like terms: -9 + 9 = 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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