Question

give two examples that show how using parentheses can change the order in which operations are performed in an expression

Answer 1

Example 1.
(40*2) - 8/12

Simplify 40×2 to 80

80−
`(8)/(12)`

Simplify

`(238)/(3)`

Example 2.
40*(2 -8/12)

Simplify

40(2-
`(2)/(3)`)
which is 40 x
`(4)/(3)`

Simplify once more and your answer is
`(160)/(3)`