17 + [11 − {1 9 ×3 − ( 9 of 6 + 7 − 44 ÷ 4)}]
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Answer:
=17+[11-{19×3-(54+7-44÷4)}]
=17+[11-{57-(54+7-44÷4)}]
=17+[11-{57-(54+7-11)}]
=17+[11-{57-(61-11)}]
=17+[11-{57-(50)}]
=17+[11-{7}]
=17+4
=21
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