5a+5b+4a+4b=

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Solution for 5a+5b+4a+4b= equation:


Simplifying
5a + 5b + 4a + 4b = 0

Reorder the terms:
5a + 4a + 5b + 4b = 0

Combine like terms: 5a + 4a = 9a
9a + 5b + 4b = 0

Combine like terms: 5b + 4b = 9b
9a + 9b = 0

Solving
9a + 9b = 0

Solving for variable 'a'.

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

Add '-9b' to each side of the equation.
9a + 9b + -9b = 0 + -9b

Combine like terms: 9b + -9b = 0
9a + 0 = 0 + -9b
9a = 0 + -9b
Remove the zero:
9a = -9b

Divide each side by '9'.
a = -1b

Simplifying
a = -1b

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