16-a=13

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Solution for 16-a=13 equation:


Simplifying
16 + -1a = 13

Solving
16 + -1a = 13

Solving for variable 'a'.

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

Add '-16' to each side of the equation.
16 + -16 + -1a = 13 + -16

Combine like terms: 16 + -16 = 0
0 + -1a = 13 + -16
-1a = 13 + -16

Combine like terms: 13 + -16 = -3
-1a = -3

Divide each side by '-1'.
a = 3

Simplifying
a = 3

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