Answer:
1 7/8
Step-by-step explanation:
The first step is to find the least common denominator of 3/8 and 9/4, or the least common multiple of 8 and 4. LCD is 8. Make the denominators the same as the LCD.
-3/8 + 9/4x2
-3/8 + 18/8
-3+18/8
15/8
1 7/8
Hope this helps!:) Best of luck!