12b-(9b+4a)=

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Solution for 12b-(9b+4a)= equation:


Simplifying
12b + -1(9b + 4a) = 0

Reorder the terms:
12b + -1(4a + 9b) = 0
12b + (4a * -1 + 9b * -1) = 0
12b + (-4a + -9b) = 0

Reorder the terms:
-4a + 12b + -9b = 0

Combine like terms: 12b + -9b = 3b
-4a + 3b = 0

Solving
-4a + 3b = 0

Solving for variable 'a'.

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

Add '-3b' to each side of the equation.
-4a + 3b + -3b = 0 + -3b

Combine like terms: 3b + -3b = 0
-4a + 0 = 0 + -3b
-4a = 0 + -3b
Remove the zero:
-4a = -3b

Divide each side by '-4'.
a = 0.75b

Simplifying
a = 0.75b

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