Amanufacturer determines that the cost of making a computer compass is 2.161616 write the class as a fraction and as a mixed number how would i salve that

First of all you times 2.16 by 100 to get 21.61616

you then minus the original number to get 21.4.

You can then times that by 10 to why 214 and you can divide 214 by 99:
214/99 = 2.161616

Hope this helps! :)

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0

the value of x is equal to 0.