.3+.8b=.45

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Solution for .3+.8b=.45 equation: 


Simplifying
0.3 + 0.8b = 0.45

Solving
0.3 + 0.8b = 0.45

Solving for variable 'b'.

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

Add '-0.3' to each side of the equation.
0.3 + -0.3 + 0.8b = 0.45 + -0.3

Combine like terms: 0.3 + -0.3 = 0.0
0.0 + 0.8b = 0.45 + -0.3
0.8b = 0.45 + -0.3

Combine like terms: 0.45 + -0.3 = 0.15
0.8b = 0.15

Divide each side by '0.8'.
b = 0.1875

Simplifying
b = 0.1875

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