Question

Simplify the expression 5/9.[12.6+(-42)-(-15)]

Answer 1

25

Explanation:

5/9 [12*6+(-42)-(-15)]

`(5)/(9)[12*6+(-42)-(-15)]`

We use order of operation PEMDAS

Parenthesis , Exponents , Multiply and Divide , Add and subtract

+ and - becomes minus, - and - becomes plus

`(5)/(9)[12*6+(-42)-(-15)]`

`(5)/(9)[12*6-42+15]`

simplify the second parenthesis

`(5)/(9)[72-42+15]`

`(5)/(9)[30+15]`

`(5)/(9)[45]`

Now 5(45)= 225, then divide by 9

`(225)/(9)`

25

answer = 25