4a+4a+4a+12+12+9a=

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Solution for 4a+4a+4a+12+12+9a= equation:


Simplifying
4a + 4a + 4a + 12 + 12 + 9a = 0

Reorder the terms:
12 + 12 + 4a + 4a + 4a + 9a = 0

Combine like terms: 12 + 12 = 24
24 + 4a + 4a + 4a + 9a = 0

Combine like terms: 4a + 4a = 8a
24 + 8a + 4a + 9a = 0

Combine like terms: 8a + 4a = 12a
24 + 12a + 9a = 0

Combine like terms: 12a + 9a = 21a
24 + 21a = 0

Solving
24 + 21a = 0

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-24' to each side of the equation.
24 + -24 + 21a = 0 + -24

Combine like terms: 24 + -24 = 0
0 + 21a = 0 + -24
21a = 0 + -24

Combine like terms: 0 + -24 = -24
21a = -24

Divide each side by '21'.
a = -1.142857143

Simplifying
a = -1.142857143

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