Answer:
-5/12≈ -0.417−0.417
Explanation:
Step 1 of 2: Subtract. 
Subtract 
1 over 3 
1 
3 
 − 3 over 4 
3 
4 
 = negative 5 over 12− 
5 
12 
Step 1 of 2: Subtract, sub-step a: Find common denominator. 
Find common denominator 
1 over 3 
1 
3 
 − 3 over 4 
3 
4 
 = ( 1 × 4 ) over ( 3 × 4 ) 
1 × 4 
3 × 4 
 − ( 3 × 3 ) over ( 4 × 3 ) 
3 × 3 
4 × 3 
 = 4 over 12 
4 
12 
 − 9 over 12 
9 
12 
12 is the least common multiple of denominators 3 and 4. Use it to convert to equivalent fractions with this common denominator. 
Step 1 of 2: Subtract, sub-step b: Subtract. 
Subtract 
4 over 12 
4 
12 
 − 9 over 12 
9 
12 
 = ( 4 − 9 ) over 12 
4 − 9 
12 
 = negative 5 over 12− 
5 
12