Answer:

Step-by-step explanation:
Steps are in the photo
The Least Common Multiple is used to add fractions with unlike denominators:
Three things can happen:
1/3 + 1/7 - the LCM is the product of the denominators (in this case 21)
2/8 + 3/16 - the LCM is the greater denominator (in this case 16)
2/9 + 5/6 - the LCM is lower than the product of the denominators (in this case it is 18)
The Greatest Common Factor is used to reduce fractions quickly:

÷

=

By using the GCF -in this case 24, I reduced the fraction in a single step.
If I kept dividing by 2/2 (not the GCF), it would take much longer:
48/72 = 24/36 = 12/18 = 6/9 and then I would still have to divide 6/9 by 3/3 to get 2/3
Answer : 1.29
Reason : Any number in the second decimal place represents a value of 9 hundredths
Answer: n=2
Step-by-step explanation: if 2*4=8, 3 less of 8=5
Answer:
Rate of change = 75%
Step-by-step explanation:
Given:
First value (V1) = 4
Final value (V2) = 7
Find:
Rate of change.
Computation:
⇒ Rate of change = [(V2 - V1) / V1]100
⇒ Rate of change = [(7 - 4) / 4]100
⇒ Rate of change = [(3) / 4]100
⇒ Rate of change = [0.75]100
Rate of change = 75%