Respuesta :

Step-by-step explanation:

12) 10/5 = x/8

cross multiply

8×10 = 5×x

80 = 5x

dividing through by 5

16 = x

13) 2/4 = x/6

cross multiply

2× 6 = 4 × x

12 = 4x

dividing through by 4

12 = 4x

3 = x

14) 6/x = 4/5

cross multiply

6×4 = x× 5

24 = 5x

dividing through with 5

24 = 5x

24= x