Ratio of number of 4G and 5G mobile sold in shop A is 12:13. Number of 5G mobile sold in shop C is 21 more than the number of 5G mobile in shop D. Number 5G mobile sold in shop E is eight more than the number of 4G mobile sold in same shop. Number of 4G mobile sold in shop A is 96% of number of 4G mobile sold in shop B. Ratio of number of 4G mobile sold in shop B and C is 25:27. Ratio of number of 4G and 5G mobile sold in shop D is 10:11. Total number of mobile [4G and 5G] mobile sold in shop C is 255. Number of 4G mobile sold in shop E is 6 more than the number of 4G mobile sold in shop D. Number of 5G mobile sold in shop A is 26 more than the number of 5G mobile sold in shop E.
Total number of mobiles sold in shop B 265. Difference between number of 5G mobile sold in shop A and B is x. Find the value of 7x?