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
