3=2a-b

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Solution for 3=2a-b equation:


Simplifying
3 = 2a + -1b

Solving
3 = 2a + -1b

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
3 + -2a = 2a + -2a + -1b

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

Add '-3' to each side of the equation.
3 + -3 + -2a = -3 + -1b

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

Divide each side by '-2'.
a = 1.5 + 0.5b

Simplifying
a = 1.5 + 0.5b

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