Question

15+9÷3-[5×3{5-(7-4)}]​

Answer 1

Step-by-step explanation:

$15 + 9 \div 3 - (5 \times 3(5 - (7 - 4))) \\ = 15 + 9 \div 3 - (15(5 - 3)) \\ = 15 + 3 - (15 \times 2) \\ = 18 - 30 \\ = - 12$

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Answer 2

Answer:

Step-by-step explanation:

15+9÷3-[5×3{5-(3)}]

15+3-[5×3{2}]

15+3-[5×6]

18-30

-12.