<span>Before you can add or subtract
fractions with different denominators, you must first find equivalent
fractions with the same denominator, like this:
<span>Find the smallest multiple (LCM) of both numbers.
<span>Rewrite the fractions as equivalent fractions with the LCM as the denominator.</span></span></span>
Hope i helped!
Answer:

Step-by-step explanation:

For a male student who has a measured pulse rate of 52 beats per minute.
Raw Score, X =52 beats per minute.
Therefore:

Since the usual pulse rates are within 2 standard deviations of the mean, a z-score of -1.49 tells us that the selected student's pulse rate is within the usual pulse rates.
Answer:

Step-by-step explanation:

Do you need any one PARTICULAR example? If yes, then it would be:
-740/17 + 10 / 17 ....
keep the denominator same, which would not be divisible by numerator; and sum of numrerator should be equal to -730
15/20 is 3/4s or 0.75
1/4 is 0.25