Answer:
29
Step-by-step explanation:
First, 4d-7=25/4
Then,4d=53/4.
Then you cross multiply, to get 16d = 53. Your final answer is 53/16, or 3 5/16.
20(7.5*10^-2)
the *10^-2 means we move the decimal of 7.5 2 places to the left
20(.075)
=1.5
Are you asking what is 248-200? If so that would be 48. 200-248=248
Answer:

Step-by-step explanation:
Start by making the denominators of both fraction the same. This can be done by multiplying one fraction's denominator by the other.
After simplifying and combining the two fractions together, check if the numerator can be factorised such that there is a common factor in the denominator and numerator. In this case, the numerator cannot be factorised.
Lastly, expand the denominator.





