Answer: 3
Step-by-step explanation: Subtract 
1 over 5 
1 
5 
 − 4 = negative 19 over 5− 
19 
5 
Step 1 of 2: Subtract, sub-step a: Convert integer to fraction. 
Convert integer to fraction 
4 = 4 over 1 
4 
1 
Step 1 of 2: Subtract, sub-step b: Find common denominator. 
Find common denominator 
1 over 5 
1 
5 
 − 4 over 1 
4 
1 
 = ( 1 × 1 ) over ( 5 × 1 ) 
1 × 1 
5 × 1 
 − ( 4 × 5 ) over ( 1 × 5 ) 
4 × 5 
1 × 5 
 = 1 over 5 
1 
5 
 − 20 over 5 
20 
5 
5 is the least common multiple of denominators 5 and 1. Use it to convert to equivalent fractions with this common denominator. 
Step 1 of 2: Subtract, sub-step c: Subtract. 
Subtract 
1 over 5 
1 
5 
 − 20 over 5 
20 
5 
 = ( 1 − 20 ) over 5 
1 − 20 
5 
 = negative 19 over 5− 
19 
5 
Step 1 of 2: Subtract.
Step 2 of 2: Simplify. 
Simplify 
negative 19 over 5− 
19 
5 
 = negative 3 and 4 over 5− 3 
4 
5 
Step 2 of 2: Simplify, sub-step a: Reduce fraction to lowest terms. 
Reduce fraction to lowest terms 
1 is the greatest common divisor of 19 and 5. The result can't be further reduced. 
Step 2 of 2: Simplify, sub-step b: Convert improper fraction to mixed number. 
Convert improper fraction to mixed number 
negative 19 over 5− 
19 
5 
 = negative 3 and 4 over 5− 3 
4 
5 
19 ÷ 5 = 3 remainder 4 
Step 2 of 2: Simplify.
− 
19 
5 
 = negative 3 and 4 over 5− 3 
4 
5 
Step 2 of 2: Simplify, sub-step a: Reduce fraction to lowest terms. 
Reduce fraction to lowest terms 
1 is the greatest common divisor of 19 and 5. The result can't be further reduced. 
Step 2 of 2: Simplify, sub-step b: Convert improper fraction to mixed number. 
Convert improper fraction to mixed number 
negative 19 over 5− 
19 
5 
 = negative 3 and 4 over 5− 3 
4 
5 
19 ÷ 5 = 3 remainder 4