9+a=-42

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Solution for 9+a=-42 equation: 


Simplifying
9 + a = -42

Solving
9 + a = -42

Solving for variable 'a'.

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

Add '-9' to each side of the equation.
9 + -9 + a = -42 + -9

Combine like terms: 9 + -9 = 0
0 + a = -42 + -9
a = -42 + -9

Combine like terms: -42 + -9 = -51
a = -51

Simplifying
a = -51

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