Answer:
3.407
Explanation:
Step 1: Plug in variables
[2(-3/5)-1/3]÷-6.75/15
Step 2: Solve inside parenthesis
(-6/5-1/3)÷-6.75/15
Step 3: Find common denominator in the parenthesis
(-18/15-5/15)÷-6.75/15
-23/15÷-6.75/15
Step 4: Divide
Step 5: Make sure answer is positive number when multiplying two negatives
Answer: 3.407
Sorry if this isn't right in your books I'll try to improve, Thanks.