2(a+2a)+9=99

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Solution for 2(a+2a)+9=99 equation:


Simplifying
2(a + 2a) + 9 = 99

Combine like terms: a + 2a = 3a
2(3a) + 9 = 99

Remove parenthesis around (3a)
2 * 3a + 9 = 99

Multiply 2 * 3
6a + 9 = 99

Reorder the terms:
9 + 6a = 99

Solving
9 + 6a = 99

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 + 6a = 99 + -9

Combine like terms: 9 + -9 = 0
0 + 6a = 99 + -9
6a = 99 + -9

Combine like terms: 99 + -9 = 90
6a = 90

Divide each side by '6'.
a = 15

Simplifying
a = 15

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