(3a+7)+(5a-9)=

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Solution for (3a+7)+(5a-9)= equation:


Simplifying
(3a + 7) + (5a + -9) = 0

Reorder the terms:
(7 + 3a) + (5a + -9) = 0

Remove parenthesis around (7 + 3a)
7 + 3a + (5a + -9) = 0

Reorder the terms:
7 + 3a + (-9 + 5a) = 0

Remove parenthesis around (-9 + 5a)
7 + 3a + -9 + 5a = 0

Reorder the terms:
7 + -9 + 3a + 5a = 0

Combine like terms: 7 + -9 = -2
-2 + 3a + 5a = 0

Combine like terms: 3a + 5a = 8a
-2 + 8a = 0

Solving
-2 + 8a = 0

Solving for variable 'a'.

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

Add '2' to each side of the equation.
-2 + 2 + 8a = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 8a = 0 + 2
8a = 0 + 2

Combine like terms: 0 + 2 = 2
8a = 2

Divide each side by '8'.
a = 0.25

Simplifying
a = 0.25

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