Question

How do you evaluate 10x + 60 ÷ (2y), for x=5 and y=2?

Answer 1

`50 + 15 = 65`

Explanation:

Remember that the variables we use just represent numbers, although usually we don't know what the values are, but we work wit general principals and properties anyway.

But as soon as we are told the values, we can evaluate the expression - ie, work out a number for it.

In `10x+60÷(2y)" "`replace the `x` by 5, and the `y` by 2, remembering to follow the correct order of operations as well.
PEDMAS, BODMAS whatever you use......

`10(5)+60÷(2(2))`

=`50 + 60÷4`

=`50 + 15`

=`65`