A+21=-1

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Solution for A+21=-1 equation: 


Simplifying
A + 21 = -1

Reorder the terms:
21 + A = -1

Solving
21 + A = -1

Solving for variable 'A'.

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

Add '-21' to each side of the equation.
21 + -21 + A = -1 + -21

Combine like terms: 21 + -21 = 0
0 + A = -1 + -21
A = -1 + -21

Combine like terms: -1 + -21 = -22
A = -22

Simplifying
A = -22

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