Question

me ajudem com a questão 7

Answer 1

Resposta:

Explicação passo-a-passo:

A)+17

B)+20

C)+12

D)+17

E)+30

F)-5

G)-4

H)-21

I)+26

J)-2

K)+8

Answer 2

Passo a passo

A) 15-(3-2)+(7-4)

15-1+3=17

B) 25-(8-5+3)-(12-5-8)

25-6-(-1)

25-6+1=20


C) (10-2)-3+(8+7-5)

8-3+10=15

D) (9-4+2)-1+(9+5-3)

7-1+11=17

E) 18-[2+(7-3-8)-10]

18-[2+(-4)-10]

18-[2-4-10]

18-[-12]

18+12=30

F) -4+[-3+(-5+9-2)]

-4+[-3+(+2)]

-4+[-3+2]

-4+[-1]

-4-1= -5

G) -6-[10+(-8-3)-1]

-6-[10+(-11)-1]

-6-[10-11-1]

-6-[-2]

-6+2= -4

H) -8-[-2-(-12)+3]

-8-[-2+12+3]

-8-[+13]

-8-13= -21

I) 25-{-2+[6+(-4-1)]}

25-{-2+[6+(-5)]}

25-{-2+[6-5]}

25-{-2+1}

25-{-1}

25+1= 26

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

17-{2+[8-(-4)+5]}

17-{2+[8+4+5]}

17-{2+17}

17-19= -2

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

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

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

3-{-5-10}

3-{-15}

3+15= 18