Question

30-{-7+[30-15+(12-13)]}-45​

Answer 1

Respuesta:

30-{-7+[30-15+(12-13)]}-45​

30-{-7+[30-15+(-1)]}-45

30-{-7+[15+(-1)]}-45

30-{-7+[14]}-45

30-7-45

-22

Answer 2

$30-(-7+(30-15+(12-13)))-45 =$

$= 30 - ( - 7 + (30 - 15 + (- 1))) - 45$

$= 30 - ( - 7 + (30 - 15 - 1)) - 45$

$= 30 - ( - 7 + 14) - 45$

$= 30 - 75 - 45$

$= - 22$

✧ CMIIW ✧

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