Question

(f) 80 = [90 - {100 - 5 - 3* (7 - 4)}]​

Answer 1

Explanation:

first the most inside bracket we have

7-4=3

then solving the next bracket we have

100-5-3... i.e. 92

now 92*3=276

now getting the most outside bracket we have

90-276 which is not equal to 80

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