Question

The value of 12 -3[5+2{(5-7)÷2}] is

Answer 1

$12 -3[5+2{(5-7)÷2}] \\ \\ 12 - 3[5 + 10 - 14 \div 2] \\ \\ 12 -3[ 15 - 7] \\ \\ 12 - 45 + 21 \\ \\ - 12.$

Answer 2

Answer:

-12

Step-by-step explanation:

12 - 3[5+2(5-7) ÷ 2]

12-3[5+ 10 - 14 ÷ 2]

12 - 3[15-7]

12-45 +21

- 12

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