Answer:
The answer is x = 2 for question 2, and r = 2 for question 4.
Step-by-step explanation:
4x + 6 + 3 = 17
(combine like terms)
4x + 9 = 17
(subtract 9 on both sides)
4x = 8
(divide 8 by 4)
x = 2
r + 11 + 8r = 29
(combine like terms)
9r + 11 = 29
(subtract 11 on both sides)
9r = 18
(divide 18 by 9)
r = 2
