Answer:
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Answer:
a) 47
b) 3
c) 1
d) 2
e) 47
f) 3
Step-by-step explanation:
read the textbook
Answer:
51
Step-by-step explanation:
Answer:

Step-by-step explanation:
Remember that 
Then,

But
and 
Then

21) 3(2j-k)=108 It is asking you to set the equation equal to j
distribute the 3
6j-3k=108
move k to the other side by adding on both sides
6j=108+3k
divide everything by 6
j=18+0.5k