a+b-4a-9b=

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Solution for a+b-4a-9b= equation:


Simplifying
a + b + -4a + -9b = 0

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

Combine like terms: a + -4a = -3a
-3a + b + -9b = 0

Combine like terms: b + -9b = -8b
-3a + -8b = 0

Solving
-3a + -8b = 0

Solving for variable 'a'.

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

Add '8b' to each side of the equation.
-3a + -8b + 8b = 0 + 8b

Combine like terms: -8b + 8b = 0
-3a + 0 = 0 + 8b
-3a = 0 + 8b
Remove the zero:
-3a = 8b

Divide each side by '-3'.
a = -2.666666667b

Simplifying
a = -2.666666667b

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