3a+2(a-9)=

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Solution for 3a+2(a-9)= equation:


Simplifying
3a + 2(a + -9) = 0

Reorder the terms:
3a + 2(-9 + a) = 0
3a + (-9 * 2 + a * 2) = 0
3a + (-18 + 2a) = 0

Reorder the terms:
-18 + 3a + 2a = 0

Combine like terms: 3a + 2a = 5a
-18 + 5a = 0

Solving
-18 + 5a = 0

Solving for variable 'a'.

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

Add '18' to each side of the equation.
-18 + 18 + 5a = 0 + 18

Combine like terms: -18 + 18 = 0
0 + 5a = 0 + 18
5a = 0 + 18

Combine like terms: 0 + 18 = 18
5a = 18

Divide each side by '5'.
a = 3.6

Simplifying
a = 3.6

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