A-2.9=-7.8

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Solution for A-2.9=-7.8 equation: 


Simplifying
A + -2.9 = -7.8

Reorder the terms:
-2.9 + A = -7.8

Solving
-2.9 + A = -7.8

Solving for variable 'A'.

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

Add '2.9' to each side of the equation.
-2.9 + 2.9 + A = -7.8 + 2.9

Combine like terms: -2.9 + 2.9 = 0.0
0.0 + A = -7.8 + 2.9
A = -7.8 + 2.9

Combine like terms: -7.8 + 2.9 = -4.9
A = -4.9

Simplifying
A = -4.9

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