Question

Solve for x.

3/4(−4.2−x)=5
Enter your answer as a mixed number in simplest form in the box.

Answer 1

x=10.86

Mixed number = 10 43/50

Explanation:

To solve for x you first need to distribute.

To do this I make 3/4 into 0.75 just for now to make it easier.

Then do:

0.75x-4.2=-3.15

then you need to distribute to the x. That's pretty simple all you do is change the -x to -0.75x.

So your new simplified equation is:

-3.15 -0.75x=5

now you need to solve that

To do that you need to get the -0.75x alone:

-3.15 -0.75x =5

+3.15 +3.15

You add 3.15 to each side the first to to cancel out the -3.15 and then you add it to the 5 to make it even.

So your new equation is:

-0.75x=8.15

To find x just dived 8.15 by -0.75

8.15/-0.75=-10.86

so x = 10.86

you take out the - because although -x = -10.86 regular x =10.86 and is not negative.

Then you need to make that into a mixed number is 10 43/50