Question

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Answer 1

Respuesta:

1.

= 5-{6[2(6-9)+3²]}

= 5-{6[2(-3)+3²]}

= 5-{6[2(-3)+9]}

= 5-{6[-6+9]}

= 5-{6[3]}

= 5-18

= -13

2.

= 7+3{8[4+(9-7)-18÷2]}

= 7+3{8[4+2-18÷2]}

= 7+3{8[4+2-9]}

= 7+3{8[6-9]}

= 7+3{8[-3]}

= 7+3{-24}

= 7-72

= -65