Answer:
a = -36/7
Step-by-step explanation:
55 + 7a = 19
(55 - 55) + 7a = (19 - 55)
7a = -36
7a/7 = -36/7
a = -36/7 the fraction can't be simplified any further
The answer is 5
B.
Use the multiplication table of 12 and find that 5x12=60. Answer B is the only one that has that.
Answer: 3 years