A mixed number is an addition of its whole and fractional parts.

Add and .

Write as a fraction with a common denominator.

Combine the numerators over the common denominator.

Add and .

Multiply the numerator by the reciprocal of the denominator.

Factor out of .

Factor out of .

Cancel the common factor.

Rewrite the expression.

Combine and .

Multiply by .

The result can be shown in multiple forms.

Exact Form:

Decimal Form:

Mixed Number Form:

Simplify 12÷1 7/20