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Evaluate 7 + 8 + 9 - 1 + 2 - 21 + 531). 452). 233). 574). 75 |
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Answer» Addition takes priority over subtraction, HENCE: 7 + 8 + 9 - 1 + 2 - 21 + 53 = 15 + 9 - 1 + 2 - 21 + 53 = 24 - 1 + 2 - 21 + 53 = 26 - 1 - 21 + 53 = 79 - 1 - 21 Simple subtraction: 79 - 1 - 21 = 57 |
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