A+4.2=9.8

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Solution for A+4.2=9.8 equation: 


Simplifying
A + 4.2 = 9.8

Reorder the terms:
4.2 + A = 9.8

Solving
4.2 + A = 9.8

Solving for variable 'A'.

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

Add '-4.2' to each side of the equation.
4.2 + -4.2 + A = 9.8 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + A = 9.8 + -4.2
A = 9.8 + -4.2

Combine like terms: 9.8 + -4.2 = 5.6
A = 5.6

Simplifying
A = 5.6

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