There are no integer solutions, i.e. no solutions in the "indicated set".

The solution set (restricted to integers) is the empty set.

# How do you solve this problem in the indicated set? 4x-21=18 {integers}?

I got as far as x=9.75. Would you round up to 10?

## 10 Answers

- 40
- 4x = 39

x = 39 / 4

x = 9•75

x = 10___rounded to nearest integer as you suggest02 - You have :

-------------------

4x - 21 = 18

Add 21 to both sides :

----------------------------------

4x - 21 + 21 = 18 + 21

4x = 39

Divide both sides by 4 :

--------------------------------------

4x/4 = 39/4

x = 39/4 = 9 3/4 <----------------------------01 - Definitely 10 if it has to be an integer, it would make no sense to round down to 9 so go with 10 all the way02
- 4x-21=18

=>4x=18+21

=>4x=39

=>x=39/4=9.75

When we round it to the nearest tenth, we got 10

So the answer is 10 {integer}01 - 4x-21=18

4x=18+21(Transposing)

4x=39

x=9.7500 - 4x - 21 = 18 ,

4x = 18 + 21 ,

4x = 39 ,

x = 39 / 4 , x = 9 3/4 = 9.7500 - No, no, NO! The equation has no solution in the integers!!00
- 4x-21=18

=>4x=18+21

=>4x=39

=>x=39/4=9.7500 - Simple : we have known real numbers and unknown number,which is X .

By transfer the real number in one side of the equation ,we will have a sequence of a new number.Using the mathematical signs we will determinate value of the X .

In this case :

-21 after transfer to other side will be + 21 ,which mean 4X= 18 +21 ,then 4X = 39

Now by dividing the 39 to 4 39/4=X ,then X is equal with 9.7500

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