3x+4b=21

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Solution for 3x+4b=21 equation: 


Simplifying
3x + 4b = 21

Reorder the terms:
4b + 3x = 21

Solving
4b + 3x = 21

Solving for variable 'b'.

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

Add '-3x' to each side of the equation.
4b + 3x + -3x = 21 + -3x

Combine like terms: 3x + -3x = 0
4b + 0 = 21 + -3x
4b = 21 + -3x

Divide each side by '4'.
b = 5.25 + -0.75x

Simplifying
b = 5.25 + -0.75x

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