Ineed letters b-d and you.i don't get how to put the numbers in.

B. 2.56 or 2 14/25

Turn 7/4 into a decimal by dividing 4 into 7 which is 1.3 and then subtract 3.86 by 1.3 to get your answer.

D.  7/12

change 7/4 and 7/3 to have the same denominator (12). so itd be 7/4=21/12 and 7/3=28/12 and to get them to equal the same youd add 7/12.

hope it helps!

B. So, first, we want to convert all of the numbers to either fractions or decimals. I am going to convert 7/4 to decimals because all I have to do is divide 7 by 4. Our new number is 1.75.

Since we are adding a number to 1.75 to get 3.86, the simplest thing we can do is subtract 1.75 from 3.86. This will get us our answer. 3.86-1.75=2.11

The number we can add to 7/4 to get 3.86 is 2.11 I will put into fraction form for you now. First, we multiply 2.11 by 100: 211.

Now, we put 211 over 100. 211/100 is our fraction. That is called an "Improper Fraction." We can take 200 off of it to make a "mixed number." Our final answer is: The number we can add to 7.4 to get is 2.11 or 2 11/100

C. What number can you add to 7/4 to get 23/12

This one is much simpler. We need to get a common denominator for both numbers. The easiest thing to do is multiply 7/4 to make it 21/12 and we multiplied by 2 to get that. Now, we subtract 21/12 from 23/12 to get 2/12 or simplified as 1/6.

The number we can add to 7/4 to get 23/12 is 1/6.

D. What number can you add to 7/4 to get 7/3?

For this problem, we will have to find the common denominator on both numbers. The LCM of 4 and 3 is 12. (If you don't know what LCM is, just ask me). So, we have 21/12 and 28/12. Now, we need to subtract the smaller one from the bigger one. 28/12 - 21/12 = 7/12. Since 7 is a prime number, we have our answer.

The number we can add to 7/4 to get 7/3 is 7/12

If you need any other help, just ask!

2

Step-by-step explanation: 7 times 6 is 42, and 42-40 equals 2.