simplify the following

a) 35 of [60-{7x7 + ( 12 - 2 of 3)}]

    35 of 60 - 7 × 7 + 12 - 2 of 3= 35 × 60 -49 + 12 - 2 ×3=35 × 60 - 49 + 12 - 6=35 × 60 - 49 + 6=35 × 60 - 55=35 × 5=175

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