Final answer:
To calculate the solution, find the sum of -18 and -25, which is -43. Then find the sum of 23 and -20, which is 3. Finally, subtract the sum of 23 and -20 from the sum of -18 and -25 to get -46.
Step-by-step explanation:
To calculate the solution, follow the order of operations: parentheses, exponents, multiplication/division (from left to right), and addition/subtraction (from left to right). First, find the sum of -18 and -25, which is -43. Next, find the sum of 23 and -20, which is 3. Finally, subtract the sum of 23 and -20 from the sum of -18 and -25. -43 - 3 = -46. Therefore, the solution is -46.
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