A+7.9=12.4

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Solution for A+7.9=12.4 equation: 


Simplifying
A + 7.9 = 12.4

Reorder the terms:
7.9 + A = 12.4

Solving
7.9 + A = 12.4

Solving for variable 'A'.

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

Add '-7.9' to each side of the equation.
7.9 + -7.9 + A = 12.4 + -7.9

Combine like terms: 7.9 + -7.9 = 0.0
0.0 + A = 12.4 + -7.9
A = 12.4 + -7.9

Combine like terms: 12.4 + -7.9 = 4.5
A = 4.5

Simplifying
A = 4.5

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