12-[{15-3(7-5)-4}÷5]
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19
12-[{15-3(7-5)-4}÷5]
12-[{15-3×2-4}÷5]
12-{(15-6-4)÷5}
12-(5÷5)
12 - 1
11 ( Ans )
12-[5÷5]
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3
= 12 - [ { 15 -3 (2) -4}÷5]
= 12 - [{15-6-4}÷5]
= 12 - [5]÷5
= 12 - 5× 1/5
= 12 - 1
=11
graxx:
is it correct ??
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