Question

Chen evaluated -3-(-5)+(7). His work is:

-3-(-5)+(7)

-3-(+2)

-3+(-2)

-5

What mistake did Chen make? Show how to find the correct value of the expression.

Note: This is order of operations

Answer 1

Chen made a mistake by not properly applying the order of operations.

To find the correct value of the expression, we need to follow the order of operations and evaluate the expression step by step.

Step-by-step explanation:

The correct steps are:

-3-(-5)+(7)

-3 +5 + 7

-3 + 12

=> 9

Therefore, the correct value of the expression is 9.