Answer:
5x = 81.2, in order to find out the value of x, we need to isolate the variable by performing inverse operations on both sides of the equation.
5x = 81.2, when we look at 5x we can see that x and 5 are being multiplied.
The inverse operation of multiplication is division so we divide by 5 from both sides:
5x = 81.2.
÷5 ÷5
x = 16.24, and now since they want us to round to the nearest ten-thousandths, it is not needed because it does not reach the thousandths place so your answer is <em>16.24</em>.
We can also double check this by replacing x with the value we found:
5x = 81.2
5(<u>16.24</u>) = 81.2
81.2 = 81.2, so it is correct because both match.
