10 - [8 - {18+ 30 = (4-7-5)}]
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Answer:
10 - [ 8 - { 18 + 30 - ( 4 - 7 - 5 ) } ] = 58
Step-by-step explanation:
= 10 - [ 8 - { 18 + 30 - ( 4 - 7 - 5 ) } ]
= 4 - 7 - 5 = ( -3 ) - 5 = -8
= 10 - [ 8 - { 18 + 30 - ( -8 ) } ]
= 18 + 30 - ( -8 ) = 48 + 8 = 56
= 10 - [ 8 - 56 ]
= 8 - 56 = 8 + ( -56 ) = -48
= 10 - ( -48 ) = 10 + 48 = 58
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