What is 128 9/40 as an improper fraction?

The mixed number 128 9/40 written as an improper fraction is 5129/40

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Convert 128 9/40 as an improper fraction

To turn the mixed number 128 9/40 into an improper fraction, use these simple steps:

First, multiply the whole number by the denominator of the fractional part: 128 × 40 = 5120.

After that, add the result to the numerator of the fractional part: 5120 + 9 = 5129.

Next, Write the sum of the previous step on the original denominator: 5129/40.

128
9/40
=
128 × 40 + 9/40
=
5129/40

This means that 128 9/40, as an improper fraction, equals 5129/40.

See also: 128 9/40 as a decimal

Examples of decimal to fraction calculations