36 - [12 + (3 x 10 2)]
20 - 3 - [7 - {2 + (4 - 3)}]
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Answer:
36-{12+(3×102) }
=36-{12+306}
=36-318
=-282
20-3-[7-{2+(4-3) }]
=17-4
=13
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