-8.58 / ___ = 3.9

Please give an explanation for the solution.

-2.2 = x

Step-by-step explanation:

So, we're trying to find x in our equation here. In order to do this, we need to isolate the variable.

-8.58 / ___ = 3.9

It's easier for me to write out the equation like this:

= 3.9

What we're going to do here is multiply x on both sides.

= 3.9 (x)

The x with the fraction cancels out, leaving -8.58.  3.9 times x is 3.9x.

Our equation now looks like this:

-8.58 = 3.9x  We now divide 3.9 from both sides.  (3.9x divided by 3.9

-2.2 = x          cancels out, leaving us with x).

We have now found our answer!

three-fourths of an hour

36÷48=0.75

0.75=

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.