Solve these equations for x:
13). 8x - 4 = 60     x = ______
14).
    x = ______
15). x - 5 = 15     x = ______
16). 5 - x = 2     x = ______
17). 22 - 3x = 7     x = ______
18). 18 - 2x = 6     x = ______
Write the equation for these problems first, then solve it:
19). Fifteen less than a certain number is 60. What is the number?
Equation: __________________Answer:___________
20). I am thinking of a number. Four times the number plus 5 is equal to 45. What is the number?
Equation:__________________Answer:___________
21). Four more than twice the number of cousins I have is 16. How many cousins do I have?
Equation: __________________Answer:___________