9+3a-4=3a+20-15

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Solution for 9+3a-4=3a+20-15 equation: 


Simplifying
9 + 3a + -4 = 3a + 20 + -15

Reorder the terms:
9 + -4 + 3a = 3a + 20 + -15

Combine like terms: 9 + -4 = 5
5 + 3a = 3a + 20 + -15

Reorder the terms:
5 + 3a = 20 + -15 + 3a

Combine like terms: 20 + -15 = 5
5 + 3a = 5 + 3a

Add '-5' to each side of the equation.
5 + -5 + 3a = 5 + -5 + 3a

Combine like terms: 5 + -5 = 0
0 + 3a = 5 + -5 + 3a
3a = 5 + -5 + 3a

Combine like terms: 5 + -5 = 0
3a = 0 + 3a
3a = 3a

Add '-3a' to each side of the equation.
3a + -3a = 3a + -3a

Combine like terms: 3a + -3a = 0
0 = 3a + -3a

Combine like terms: 3a + -3a = 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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