6. The sum of a number and 17 is 30. What is the number?
7. Twice a number is 110. Find the number 8. What is the value of Sif four times the sum of S and 1 is 642
9. The product of a number and 10 is 120. what is the number?
10. Half of a certain number is equal to 26. What is the number?
11. The sum of a number and the product of 5 and 18 is 110. Find the number?
12. If the perimeter of a souare is 128. how long is its side?​