Question

At the beginning of her mathematics class Mrs. Reno gives a warm up problem. She says, "I am thinking of a number such as 6 less than the product of 7 and this number is 85.” Which number is she thinking of?

Answer 1

7*85=595 so 595-6= 589 
589 is the answer 

Answer 2

7x-6=85
Add 6 to both sides
7x=91
Divide both sides by 7.
x=13

hope this helps.