i would subtract 7 and divide by 4;
4x + 7 = 15
4x = 8
x = 2
Answer:

Step-by-step explanation:
we know that
1 Kilometer (km) is equal to 100 dekameters (dam)

To convert km to dam , multiply by 100
we have

Convert to dam

Answer:
19/6
Step-by-step explanation:
5 3/6 - 2 1/3 = 19/6