A+6.9=4.2

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Solution for A+6.9=4.2 equation: 


Simplifying
A + 6.9 = 4.2

Reorder the terms:
6.9 + A = 4.2

Solving
6.9 + A = 4.2

Solving for variable 'A'.

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

Add '-6.9' to each side of the equation.
6.9 + -6.9 + A = 4.2 + -6.9

Combine like terms: 6.9 + -6.9 = 0.0
0.0 + A = 4.2 + -6.9
A = 4.2 + -6.9

Combine like terms: 4.2 + -6.9 = -2.7
A = -2.7

Simplifying
A = -2.7

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