Question

9 less than seven times some number is -6

Answer 1

Let n is some number
seven times some number = 7n
9 less than seven times some number= 7n - 9

9 less than seven times some number is -6:  7n - 9 = -6

answer: 7n - 9 = -6

hope that helps

Answer 2

The answer 9-15 
9-15=-6