## Reduce: ^{89}/_{42}

## Detailed calculations below:

### Introduction. Fractions

#### A fraction consists of two numbers and a fraction bar: ^{89}/_{42}

#### The number above the bar is the numerator: 89

#### The number below the bar is the denominator: 42

#### The fraction bar means that the two numbers are dividing themselves:

^{89}/_{42} = 89 ÷ 42

#### Divide the numerator by the denominator to get fraction's value:

Value = 89 ÷ 42

### Introduction. Percent

#### 'Percent (%)' means 'out of one hundred':

#### p% = p 'out of one hundred',

#### p% = ^{p}/_{100} = p ÷ 100

### Note:

#### The fraction ^{100}/_{100} = 100 ÷ 100 = 100% = 1

#### Multiply a number by the fraction ^{100}/_{100},

... and its value doesn't change.

## To reduce a fraction, divide both its numerator and denominator by their greatest common factor, GCF.

#### To calculate the greatest common factor, we build the prime factorization of the two numbers.

### Integer numbers prime factorization:

#### Prime Factorization of a number: finding the prime numbers that multiply together to make that number.

#### 89 is a prime number, it cannot be broken down to other prime factors;

#### 42 = 2 × 3 × 7;

42 is not a prime, is a composite number;

** Positive integers that are only dividing by themselves and 1 are called prime numbers. A prime number has only two factors: 1 and itself. *

* A composite number is a positive integer that has at least one factor (divisor) other than 1 and itself.

### Calculate the greatest (highest) common factor (divisor), gcf, hcf, gcd:

#### Multiply all the common prime factors, by the lowest exponents (if any).

#### But the two numbers have no common prime factors.

#### gcf, hcf, gcd (89; 42) = 1

coprime numbers (relatively prime)

## Fraction's numerator and denominator are coprime numbers (no common prime factors). Fraction cannot be reduced (simplified) - irreducible.

^{89}/_{42} is an improper fraction.

#### An improper fraction: numerator larger than denominator.

## Rewrite the fraction:

### As a mixed number (mixed fraction):

#### A mixed number (mixed fraction): a whole number and a proper fraction, of the same sign.

#### A proper fraction: numerator smaller than denominator.

#### 89 ÷ 42 = 2 and remainder = 5 =>

#### 89 = 2 × 42 + 5 =>

^{89}/_{42} =

^{(2 × 42 + 5)} / _{42} =

^{(2 × 42)} / _{42} + ^{5} / _{42} =

#### 2 + ^{5}/_{42} =

#### 2 ^{5}/_{42}

### As a decimal number:

#### 2 ^{5}/_{42} =

#### 2 + ^{5}/_{42} =

#### 2 + 5 ÷ 42 ≈

#### 2.119047619048 ≈

#### 2.12

### As a percentage:

#### 2.119047619048 =

#### 2.119047619048 × ^{100}/_{100} =

#### ^{211.904761904762}/_{100} =

#### 211.904761904762% ≈

#### 211.9%

#### In other words:

#### 1) Calculate fraction's value.

#### 2) Multiply that number by 100.

#### 3) Add the percent sign % to it.

## Final answer

continued below...

## Final answer:

:: written in four ways ::

## As an improper fraction

(numerator larger than denominator):

^{89}/_{42} = ^{89}/_{42}

## As a mixed number (mixed fraction)

(a whole number and a proper fraction, of the same sign):

^{89}/_{42} = 2 ^{5}/_{42}

## As a decimal number:

^{89}/_{42} ≈ 2.119047619048 ≈ 2.12

## As a percentage:

^{89}/_{42} ≈ 211.9%

## More operations of this kind:

## Online calculator: reduce (simplify) fractions