3+a=16

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Solution for 3+a=16 equation: 


Simplifying
3 + a = 16

Solving
3 + a = 16

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + a = 16 + -3

Combine like terms: 3 + -3 = 0
0 + a = 16 + -3
a = 16 + -3

Combine like terms: 16 + -3 = 13
a = 13

Simplifying
a = 13

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