Answer:
820
Step-by-step explanation:
Some people may get confused and just calculate this question from left to right, but I was taught to use this formula:
Brackets
Exponents
Division
Multiplication
Addition
Subtraction
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So lets multiply first,
163 × 80 = 13,040
153 × 47 = 7,191
153 × 33 = 5,049
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Next, we subtract:
13,040 - 7,191 - 5,049 = 820
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Have a good day :)