9x would be you answer why because you'll divide 5 and 1 which is 5 then you'll add 5+4 which equals 9 and then just add the X at the end so your answer is 9X
Take 7 and ➗ by 51 which comes out to .137 and you can round that up to .14 or 14/100
12
13
78
97
65
90
70
these are numbers with 2 digits