-a-5=15

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Solution for -a-5=15 equation:


Simplifying
-1a + -5 = 15

Reorder the terms:
-5 + -1a = 15

Solving
-5 + -1a = 15

Solving for variable 'a'.

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

Add '5' to each side of the equation.
-5 + 5 + -1a = 15 + 5

Combine like terms: -5 + 5 = 0
0 + -1a = 15 + 5
-1a = 15 + 5

Combine like terms: 15 + 5 = 20
-1a = 20

Divide each side by '-1'.
a = -20

Simplifying
a = -20

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