9. X=7. 7-8=-1
8. X=18. 18-7=11
1st two are 25, next two are three times that
so 3 x 25 = 75
so the four digit number is 2575
that is multiplied by 352
so 2575 x 352 = 906400
Answer:
7m + 19 should be the answer
Step-by-step explanation:
total 7m + 19