3a-b=2b-1a

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Solution for 3a-b=2b-1a equation:


Simplifying
3a + -1b = 2b + -1a

Reorder the terms:
3a + -1b = -1a + 2b

Solving
3a + -1b = -1a + 2b

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 + -1b = -1a + a + 2b

Combine like terms: 3a + a = 4a
4a + -1b = -1a + a + 2b

Combine like terms: -1a + a = 0
4a + -1b = 0 + 2b
4a + -1b = 2b

Add 'b' to each side of the equation.
4a + -1b + b = 2b + b

Combine like terms: -1b + b = 0
4a + 0 = 2b + b
4a = 2b + b

Combine like terms: 2b + b = 3b
4a = 3b

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

Simplifying
a = 0.75b

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