Question

calcule a expressão numérica {-10+[15÷(-7+4)+(12+7)]}

Answer 1

{- 10 + [15 ÷ (- 7 + 4) + (12 + 7)]}
{- 10 + [15 ÷ - 3 + 19]}
{- 10 + [- 5 + 19]}
{- 10 + 14}
=> 4

Answer 2

{-10 + [15 ÷ (-7 + 4) + (12 + 7)]}
{-10 + [15 ÷ -3 + 19]}
{-10 + [-5 + 19]}
{-10 -5 + 19}
{-15 + 19}
R: 4

bons estudos!!