3b-a-2=9

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Solution for 3b-a-2=9 equation:


Simplifying
3b + -1a + -2 = 9

Reorder the terms:
-2 + -1a + 3b = 9

Solving
-2 + -1a + 3b = 9

Solving for variable 'a'.

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

Add '2' to each side of the equation.
-2 + -1a + 2 + 3b = 9 + 2

Reorder the terms:
-2 + 2 + -1a + 3b = 9 + 2

Combine like terms: -2 + 2 = 0
0 + -1a + 3b = 9 + 2
-1a + 3b = 9 + 2

Combine like terms: 9 + 2 = 11
-1a + 3b = 11

Add '-3b' to each side of the equation.
-1a + 3b + -3b = 11 + -3b

Combine like terms: 3b + -3b = 0
-1a + 0 = 11 + -3b
-1a = 11 + -3b

Divide each side by '-1'.
a = -11 + 3b

Simplifying
a = -11 + 3b

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