Answer: 15.8 .
Explanation:
2 x { 6 + [ 12 ÷ (3 + 2)]} - 1 ;
= 2 x { 6 + [ 12 ÷ (5)]} - 1 ;
= 2 x { 6 + [ 12/5 } - 1 ;
= 2 x { 6 + [ 2.4 ] - 1 ;
= 2 x { 8.4] - 1 ;
= (2 * 8.4) - 1 ;
= 16.8 - 1 ;
= 15.8 .
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