a+2+1=-1

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Solution for a+2+1=-1 equation: 


Simplifying
a + 2 + 1 = -1

Reorder the terms:
2 + 1 + a = -1

Combine like terms: 2 + 1 = 3
3 + a = -1

Solving
3 + a = -1

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + a = -1 + -3

Combine like terms: 3 + -3 = 0
0 + a = -1 + -3
a = -1 + -3

Combine like terms: -1 + -3 = -4
a = -4

Simplifying
a = -4

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