-3+a=-20

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Solution for -3+a=-20 equation: 


Simplifying
-3 + a = -20

Solving
-3 + a = -20

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 = -20 + 3

Combine like terms: -3 + 3 = 0
0 + a = -20 + 3
a = -20 + 3

Combine like terms: -20 + 3 = -17
a = -17

Simplifying
a = -17

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