a-(-20)=-19

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Solution for a-(-20)=-19 equation: 


Simplifying
a + -1(-20) = -19

Multiply -1 * -20
a + 20 = -19

Reorder the terms:
20 + a = -19

Solving
20 + a = -19

Solving for variable 'a'.

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

Add '-20' to each side of the equation.
20 + -20 + a = -19 + -20

Combine like terms: 20 + -20 = 0
0 + a = -19 + -20
a = -19 + -20

Combine like terms: -19 + -20 = -39
a = -39

Simplifying
a = -39

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