3a+9=24

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Solution for 3a+9=24 equation: 


Simplifying
3a + 9 = 24

Reorder the terms:
9 + 3a = 24

Solving
9 + 3a = 24

Solving for variable 'a'.

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

Add '-9' to each side of the equation.
9 + -9 + 3a = 24 + -9

Combine like terms: 9 + -9 = 0
0 + 3a = 24 + -9
3a = 24 + -9

Combine like terms: 24 + -9 = 15
3a = 15

Divide each side by '3'.
a = 5

Simplifying
a = 5

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