Finally addition and subtraction to arrive at the answer, which is 103.The question involves solving an arithmetic expression using the order of operations. The expression given is 300-7[4(3+5)]+3 to the 3rd power.First, we resolve the parenthesis (3+5) which equals 8. Then we multiply this result by 4, getting 32. The next step is to multiply this by 7 which results in 224. Now, we subtract 224 from 300, getting 76. Lastly, we calculate 3 to the 3rd power (or cubing of exponentials), which is 3*3*3 equals 27, and add it to 76 to arrive at the final answer: 103.Here is the step-by-step solution:Calculate inside the parenthesis: (3+5) = 8.Multiply by 4: 4*8 = 32.Multiply by 7: 32*7 = 224.Subtract from 300: 300 - 224 = 76.Calculate 3 to the 3rd power: 3*3*3 = 27.Add to the result: 76 + 27 = 103....

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