Question

me ajudem tbbmm,grataa! ♥️​

Answer 1

Resposta:

b)20-{6-[-1+(3-6)-2]}

20-{6-[-1+(-3)-2]}

20-{6-[-1-3-2]}

20-{6-[-1-5]}

20-{6-[-6]}

20-{6+6}

20-12

8

c){2-[3-(2-1)]}

{2-[3-1]}

{ 2-[2]}

{2-2}

0

d)15-[3+(9-13-18)]

15-[3+(9-21)]

15-[3+2]

15-[5]

15-5

10

e)-4-{-2+3+[-2-(6-9-3)]}

-4-{-2+3+[-2-(6-12)]}

-4-{1+[-2-(-6)

-4-{1+[-2+8]}

-4-{1+[6]}

-4-{1+6}

-4-{7}

-4-7

-11

f)1-{1-[1-(1-1)]}

1-{1-[1-0]}

1-{1-[1]}

1-{1-1}

1-{0}

1-0

1

g){-20-[3-(2+36-9)+(12-15+3)]-2}

{-20-[3-(2+27)+(12-12)]-2}

{-20-[3-29+0]-2}

{-20-[-26+0]-2}

{-20-[-26]-2}

{-20+26- 2}

{-20+24 }

{4}