Answer:
a.
and 
Step-by-step explanation:
Let x be the larger number and y be the smaller number.
We have been given that one number is 4 more than another. We can represent this information in an equation as:

We can manipulate this equation as:


We are also told that the sum of both numbers is 60. We can represent this information in an equation as:

Upon looking at our given choices, we can see that option 'a' is the correct choice.
Answer: y=2
Step-by-step explanation:
combine like terms 2+ -4 = .2 1y= -2
divide each side my 1 then simplifying y=2
Answer:
31 DVDs
Step-by-step explanation:
156 / 5 = 31.2
Answer:
13cm
Step-by-step explanation:
29x2=58
84-58=26
26÷2=13