b=3a+3b

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Solution for b=3a+3b equation: 


Simplifying
b = 3a + 3b

Solving
b = 3a + 3b

Solving for variable 'b'.

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

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

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

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

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

Simplifying
b = -1.5a

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