Question

х :7=9:3 125:25=35:х 144: х =36 :3

Answer 1

х :7=9:3

х:7=3

х=3*7

х=21

 

125:25=35:х

35:х=5

х=35/5

х=7

 

144: х =36 :3

144:х=12

х=144/12

х=12

Answer 2

х=7·9:3=21

х=25·35:125=7

х=144·3:36=12