A-2.78=4.2

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Solution for A-2.78=4.2 equation: 


Simplifying
A + -2.78 = 4.2

Reorder the terms:
-2.78 + A = 4.2

Solving
-2.78 + A = 4.2

Solving for variable 'A'.

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

Add '2.78' to each side of the equation.
-2.78 + 2.78 + A = 4.2 + 2.78

Combine like terms: -2.78 + 2.78 = 0.00
0.00 + A = 4.2 + 2.78
A = 4.2 + 2.78

Combine like terms: 4.2 + 2.78 = 6.98
A = 6.98

Simplifying
A = 6.98

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