0.3b+9=12.87

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Solution for 0.3b+9=12.87 equation: 


Simplifying
0.3b + 9 = 12.87

Reorder the terms:
9 + 0.3b = 12.87

Solving
9 + 0.3b = 12.87

Solving for variable 'b'.

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

Add '-9' to each side of the equation.
9 + -9 + 0.3b = 12.87 + -9

Combine like terms: 9 + -9 = 0
0 + 0.3b = 12.87 + -9
0.3b = 12.87 + -9

Combine like terms: 12.87 + -9 = 3.87
0.3b = 3.87

Divide each side by '0.3'.
b = 12.9

Simplifying
b = 12.9

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