-1a+1=15

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Solution for -1a+1=15 equation: 


Simplifying
-1a + 1 = 15

Reorder the terms:
1 + -1a = 15

Solving
1 + -1a = 15

Solving for variable 'a'.

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

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

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

Combine like terms: 15 + -1 = 14
-1a = 14

Divide each side by '-1'.
a = -14

Simplifying
a = -14

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