(2a-4)+(5a+9)=

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Solution for (2a-4)+(5a+9)= equation:


Simplifying
(2a + -4) + (5a + 9) = 0

Reorder the terms:
(-4 + 2a) + (5a + 9) = 0

Remove parenthesis around (-4 + 2a)
-4 + 2a + (5a + 9) = 0

Reorder the terms:
-4 + 2a + (9 + 5a) = 0

Remove parenthesis around (9 + 5a)
-4 + 2a + 9 + 5a = 0

Reorder the terms:
-4 + 9 + 2a + 5a = 0

Combine like terms: -4 + 9 = 5
5 + 2a + 5a = 0

Combine like terms: 2a + 5a = 7a
5 + 7a = 0

Solving
5 + 7a = 0

Solving for variable 'a'.

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

Add '-5' to each side of the equation.
5 + -5 + 7a = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 7a = 0 + -5
7a = 0 + -5

Combine like terms: 0 + -5 = -5
7a = -5

Divide each side by '7'.
a = -0.7142857143

Simplifying
a = -0.7142857143

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