15(-1)-3(4(-1)-6)=3(-1)+9-9(-1)

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Solution for 15(-1)-3(4(-1)-6)=3(-1)+9-9(-1) equation: 


Simplifying
15(-1) + -3(4(-1) + -6) = 3(-1) + 9 + -9(-1)

Multiply 15 * -1
-15 + -3(4(-1) + -6) = 3(-1) + 9 + -9(-1)

Multiply 4 * -1
-15 + -3(-4 + -6) = 3(-1) + 9 + -9(-1)

Combine like terms: -4 + -6 = -10
-15 + -3(-10) = 3(-1) + 9 + -9(-1)

Multiply -3 * -10
-15 + 30 = 3(-1) + 9 + -9(-1)

Combine like terms: -15 + 30 = 15
15 = 3(-1) + 9 + -9(-1)

Multiply 3 * -1
15 = -3 + 9 + -9(-1)

Multiply -9 * -1
15 = -3 + 9 + 9

Combine like terms: -3 + 9 = 6
15 = 6 + 9

Combine like terms: 6 + 9 = 15
15 = 15

Add '-15' to each side of the equation.
15 + -15 = 15 + -15

Combine like terms: 15 + -15 = 0
0 = 15 + -15

Combine like terms: 15 + -15 = 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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