12+8b=-4.2

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Solution for 12+8b=-4.2 equation: 


Simplifying
12 + 8b = -4.2

Solving
12 + 8b = -4.2

Solving for variable 'b'.

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

Add '-12' to each side of the equation.
12 + -12 + 8b = -4.2 + -12

Combine like terms: 12 + -12 = 0
0 + 8b = -4.2 + -12
8b = -4.2 + -12

Combine like terms: -4.2 + -12 = -16.2
8b = -16.2

Divide each side by '8'.
b = -2.025

Simplifying
b = -2.025

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