Answer:
A) 5 9/14
B) 7 1/2
Step-by-step explanation:
Question A asks what is 4 1/7 + 1 1/2
First turn the problem into improper fraction for it to be easier to calculate.
29/7 + 3/2
Now we have to find the denominator(bottom number)
We have 7 and 2 as our denominators. So we need to find out the lcm(least common factor)
For 7 and 2 the lcm is 14
So far we have:
29/7 + 3/2 = ?/14 + ?/14 = ?
Now we need to find the numerator(The top number). That fills in the ? over the two 14's.
To find the numerator we need to mutiply.
29/7 + 3/2 = ?/14 + ?/14 = ?
7 × ? = 14 the answer is 2 so then we multiply the top also with 2. So 29 × 2 = 58.
29/7 + 3/2 = 58/14 + ?/14 = ?
Now we have figured out one of the ?
We do the same thing for the other one
2 × ? = 14 answer is 7 so we also multiply the top with 7. 3 × 7 = 21.
29/7 + 3/2 = 58/14 + 21/14 = ?
Now we have to solve this:
58/14 + 21/14 = ?
The denominator is 14 because both of them are 14.
The top we need to add together so 58+21= 79
Now our answer is:
79/14
If we simplify it(by turning into improper fraction):
5 9/14
B) question is 4 1/2 ÷ 3/5
First we turn it into inproper fraction
9/2 ÷ 3/5
Since it is divsion we have to flip the second fraction which is 3/5 into 5/3, and turn the ÷ symbol into ×
9/2 × 5/3
Now we multiply across
9×5 = 45
2×3 = 6
answer: 45/6
Now if we simplify:
7 1/2
Hope that helped! that was long.. I would apreciate a brainlist if you could, thx!
