-2a-9=3(2a+5)

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Solution for -2a-9=3(2a+5) equation:


Simplifying
-2a + -9 = 3(2a + 5)

Reorder the terms:
-9 + -2a = 3(2a + 5)

Reorder the terms:
-9 + -2a = 3(5 + 2a)
-9 + -2a = (5 * 3 + 2a * 3)
-9 + -2a = (15 + 6a)

Solving
-9 + -2a = 15 + 6a

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
-9 + -2a + -6a = 15 + 6a + -6a

Combine like terms: -2a + -6a = -8a
-9 + -8a = 15 + 6a + -6a

Combine like terms: 6a + -6a = 0
-9 + -8a = 15 + 0
-9 + -8a = 15

Add '9' to each side of the equation.
-9 + 9 + -8a = 15 + 9

Combine like terms: -9 + 9 = 0
0 + -8a = 15 + 9
-8a = 15 + 9

Combine like terms: 15 + 9 = 24
-8a = 24

Divide each side by '-8'.
a = -3

Simplifying
a = -3

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