3a+9b=8b-a

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Solution for 3a+9b=8b-a equation:


Simplifying
3a + 9b = 8b + -1a

Reorder the terms:
3a + 9b = -1a + 8b

Solving
3a + 9b = -1a + 8b

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
3a + a + 9b = -1a + a + 8b

Combine like terms: 3a + a = 4a
4a + 9b = -1a + a + 8b

Combine like terms: -1a + a = 0
4a + 9b = 0 + 8b
4a + 9b = 8b

Add '-9b' to each side of the equation.
4a + 9b + -9b = 8b + -9b

Combine like terms: 9b + -9b = 0
4a + 0 = 8b + -9b
4a = 8b + -9b

Combine like terms: 8b + -9b = -1b
4a = -1b

Divide each side by '4'.
a = -0.25b

Simplifying
a = -0.25b

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