Question

Addison owes his mom $39 he earned $30 for mowing his neighbors lawn and then lent his sister $21 which expression represents Addison’s financial situation

Answer 1

To simplify this question, we will use the approach below

Step 1: We will use the approach below:

When Addison earns an amount, we will take it as positive

When Addison gives out money or owes money, take it as negative

Step 2: We will apply the principle above

Addison owes his mom $39 = -39

He earned $30 for mowing his neighbor's lawn = +30

He lent his sister $21 = -21

Step 3: Combine the sum above

`-39+30-21`

Hence, the correct answer is

-39 +30 -21 (First Option)