Question

Solve 12-3[5+3{(7-9)-2}]

Answer 1

12-3[5+3{(7-9)-2}]
12-3[5+3{-2-2}]
12-3[5+3×(-4)]
12-3[5-12]
12-3×(-7)
12+21
33
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Answer 2

Hi

am not sure

12 - 3 [ 5 + 3 { ( 7 - 9 ) - 2 } ]

= 12 - 3 [ 5 + 3 { ( 7 - 9 - 2 ) }

= 12 - 3 [ 5 + 3 ( - 4 ) ]

= 12 - 3 [ 5 - 12 ]

= 12 - 3 ( -7 )

= 12 + 21

= 33