(4a-9)+(2a-18)=

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Solution for (4a-9)+(2a-18)= equation:


Simplifying
(4a + -9) + (2a + -18) = 0

Reorder the terms:
(-9 + 4a) + (2a + -18) = 0

Remove parenthesis around (-9 + 4a)
-9 + 4a + (2a + -18) = 0

Reorder the terms:
-9 + 4a + (-18 + 2a) = 0

Remove parenthesis around (-18 + 2a)
-9 + 4a + -18 + 2a = 0

Reorder the terms:
-9 + -18 + 4a + 2a = 0

Combine like terms: -9 + -18 = -27
-27 + 4a + 2a = 0

Combine like terms: 4a + 2a = 6a
-27 + 6a = 0

Solving
-27 + 6a = 0

Solving for variable 'a'.

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

Add '27' to each side of the equation.
-27 + 27 + 6a = 0 + 27

Combine like terms: -27 + 27 = 0
0 + 6a = 0 + 27
6a = 0 + 27

Combine like terms: 0 + 27 = 27
6a = 27

Divide each side by '6'.
a = 4.5

Simplifying
a = 4.5

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