6+a+15=-8

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Solution for 6+a+15=-8 equation: 


Simplifying
6 + a + 15 = -8

Reorder the terms:
6 + 15 + a = -8

Combine like terms: 6 + 15 = 21
21 + a = -8

Solving
21 + a = -8

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + -21 + a = -8 + -21

Combine like terms: 21 + -21 = 0
0 + a = -8 + -21
a = -8 + -21

Combine like terms: -8 + -21 = -29
a = -29

Simplifying
a = -29

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