Question

What is c- 20 + (4c) c = 30

Answer 1

We are given the following expression:

`c-20+(4c)`

we are asked to determine the value of the expression when c = 30. To that, we replace the value of c in the expression for 30, like this:

`30-20+(4*30)`

Now we solve the operation in the parenthesis:

`30-20+120`

Now we solve the subtraction:

`10+120`

Now we solve the last operation:

`130`

Therefore, the value of the expression when c = 30 is 130