Question
Simplify 21 − [6 + 7 − {3.22 − (1.1 ×
0.2)}].Solution
21 − [6 + 7 − {3.22 −(1.1 × 0.2)}] = 21 − [6 + 7 − {3.22 − 0.22}] = 21 − [6 + 7 −3.00] = 21 − [13 − 3] = 21 − 10 = 11
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