12a+3b-4a-b=

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Solution for 12a+3b-4a-b= equation:


Simplifying
12a + 3b + -4a + -1b = 0

Reorder the terms:
12a + -4a + 3b + -1b = 0

Combine like terms: 12a + -4a = 8a
8a + 3b + -1b = 0

Combine like terms: 3b + -1b = 2b
8a + 2b = 0

Solving
8a + 2b = 0

Solving for variable 'a'.

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

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

Combine like terms: 2b + -2b = 0
8a + 0 = 0 + -2b
8a = 0 + -2b
Remove the zero:
8a = -2b

Divide each side by '8'.
a = -0.25b

Simplifying
a = -0.25b

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