1) a. x + 5 = 9
b. x-3 = 12
c. 5x - 2 = 4
d. 2(x + 7) = 13
2. The numbers are 18 and 30.
3. The number is 35.
4. The number is 12.
5. The number is - 100.
6. Teh two consecutive even numbers are 18 and (18 + 2) or 20.
7. The three consecutive odd numbers are:
x = 15
x + 2 = 15 + 2 = 17
x + 4 = 15 + 4 = 19
8. The present ages are:
Younger sister: 12 years old
Rene: 18 years old
9. Dimensions of rectangle:
Length: 25 meters
Width: 15 meters
10. The dimensions are:
Length: 100 meters
Width: 50 meters
(Please check attached solution. Please use this as your guide for similar problems.)