the sum of 3 less than 5 times a number increased by 10 is 24.what is the number?
number increased by 10: x+10
5 times a number increased by 10: 5(x+10)
3 less than 5 times a number increased by 10: 5(x+10)-3
Now you have "the sum of" all that ... and what?
sum of needs two values.
I think the question is bungled.