(13a+9b)-(2a-4b)=

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Solution for (13a+9b)-(2a-4b)= equation:


Simplifying
(13a + 9b) + -1(2a + -4b) = 0

Remove parenthesis around (13a + 9b)
13a + 9b + -1(2a + -4b) = 0
13a + 9b + (2a * -1 + -4b * -1) = 0
13a + 9b + (-2a + 4b) = 0

Reorder the terms:
13a + -2a + 9b + 4b = 0

Combine like terms: 13a + -2a = 11a
11a + 9b + 4b = 0

Combine like terms: 9b + 4b = 13b
11a + 13b = 0

Solving
11a + 13b = 0

Solving for variable 'a'.

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

Add '-13b' to each side of the equation.
11a + 13b + -13b = 0 + -13b

Combine like terms: 13b + -13b = 0
11a + 0 = 0 + -13b
11a = 0 + -13b
Remove the zero:
11a = -13b

Divide each side by '11'.
a = -1.181818182b

Simplifying
a = -1.181818182b

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