90 marbles were stored in two boxes, box A and box B. After 5 marbles were moved from box A to box B, both boxes had the same number of marbles. How many numbers were in box A orginally?

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant. given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.