SOLUTION: 5. If nine times a certain number is subtracted from seven, the result is 52. Find the number.
6. Forty-nine is equal to six less than five times a certain number. Find the numb
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Question 442237: 5. If nine times a certain number is subtracted from seven, the result is 52. Find the number.
6. Forty-nine is equal to six less than five times a certain number. Find the number.
7. Seventy-one is equal to two more than three times a certain number. Find the number.
8. Five less than four times a number equals 31. Find the number.
Answer by ilana(307) (Show Source): You can put this solution on YOUR website!
Change each of these into an algebraic equation, and then solve for the variable. I'll show you how to do the first 2, and then leave the last 2 for you.
Problem 5:
7 - 9x = 52
-9x = 45
x = -5
Problem 6:
49 = 5x - 6
55 = 5x
11 = x
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