.3+a=.4

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Solution for .3+a=.4 equation: 


Simplifying
0.3 + a = 0.4

Solving
0.3 + a = 0.4

Solving for variable 'a'.

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

Add '-0.3' to each side of the equation.
0.3 + -0.3 + a = 0.4 + -0.3

Combine like terms: 0.3 + -0.3 = 0.0
0.0 + a = 0.4 + -0.3
a = 0.4 + -0.3

Combine like terms: 0.4 + -0.3 = 0.1
a = 0.1

Simplifying
a = 0.1

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