b+0.4=0.7

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Solution for b+0.4=0.7 equation: 


Simplifying
b + 0.4 = 0.7

Reorder the terms:
0.4 + b = 0.7

Solving
0.4 + b = 0.7

Solving for variable 'b'.

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

Add '-0.4' to each side of the equation.
0.4 + -0.4 + b = 0.7 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + b = 0.7 + -0.4
b = 0.7 + -0.4

Combine like terms: 0.7 + -0.4 = 0.3
b = 0.3

Simplifying
b = 0.3

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