Question

1)calcule

a)17-{-5-3+[8-(-1-3)+5]}

b)3-{-5-[8-2+(-5+9)]}
​

Answer 1

Explicação passo-a-passo:

a)17-{-5-3+[8-(-1-3)+5]}

17-{-8+[8-(-4)+5]}

17-{-8+[8+4+5]}

17-{-8+[17]}

17-{-8+17}

17-{9}

17-9

= 8

b)3-{-5-[8-2+(-5+9)]}

3-{-5-[6+(4)]}

3-{-5-[6+4]}

3-{-5-[10]}

3-{-5-10}

3-{-15}

3+15

= 18