Question

A printing error in a math book removed the brackets and parenthesis from the original version of (7 x 3.4) - [(2.8 x 5) - (4.3 x 2)] + 16. Give the order of operations a student solving this problem could have used to evaluate the expression with the printing error, and find the value of the incorrect expression and the correct expression.

Answer 1

Answer: The value of the incorrect expression is 17.2 and the correct expression is 34.4.

Step-by-step explanation:

The BODMAS rule is followed t solve the expressions.Where B=Bracket, O=Of, D=Division, M=Multiplication, A=Addition and S=Subtraction.

The given expression is,

`(7* 3.4)-[(2.8* 5)-(4.3* 2)]+16`

First solve the parenthesis,

`23.8-[14-8.6]+16`

Now solve the brackets,

`23.8-5.4+16`

`39.8-5.4=34.4`

If the given expression does not have brackets and parenthesis.

`7* 3.4-2.8* 5-4.3* 2+16`

`23.8-14-8.6+16`

`39.8-14-8.6`

`39.8-22.6=17.2`

Therefore, the correct value of the expression is 34.2 and the incorrect value of the expression is 17.2.