Respuesta :
The fraction form would be 21/4. The decimal form would be 5.25.
What is the least common denominator ?
4 is the LCD
so keep the 3 3/4 but the 1 1/2 would change
1 1/2 = 1 2/4
Then, put it back in the equation:
3 3/4 + 1 2/4
= 4 5/4
Simplest form: 5 1/4 <====== Answer
Hope this helped!!