b+3.15=-4.2

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Solution for b+3.15=-4.2 equation: 


Simplifying
b + 3.15 = -4.2

Reorder the terms:
3.15 + b = -4.2

Solving
3.15 + b = -4.2

Solving for variable 'b'.

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

Add '-3.15' to each side of the equation.
3.15 + -3.15 + b = -4.2 + -3.15

Combine like terms: 3.15 + -3.15 = 0.00
0.00 + b = -4.2 + -3.15
b = -4.2 + -3.15

Combine like terms: -4.2 + -3.15 = -7.35
b = -7.35

Simplifying
b = -7.35

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