Answer: 4.3
Step-by-step explanation: First, use order of operations and add 0.5 and 0.3 in the paratheses to get 0.8. Then, multiply 2.5 with 0.8 to get 2. Next, divide 2 with -4 to get -0.5. Lastly, add -0.5 and 4.8 to get the final answer 4.3. Hope this helped!