Question

alguem ajuda ae pfv estou com dificuldade

Answer 1

Resposta:

1) 2 + 8 - 3 - 5 + 15 =

2+8-3-5+15

10-3-5+15

7-5+15

2+15

17

2) 12 + [35 - (10 + 2) +2] =

12+[35-(10+2)+2]

12+[35-(+12)+2]

12+[35-12+2]

12+25

37

3) [(18 + 3 . 2) ÷ 8 + 4 . 3] ÷ 6 =

[(18+3.2) :8+5.3] :6

[(18+6):8+5.3]:6

[24:8+15]:6

[3+15]:6

18:6=3

4) 37 + [-25 - (11 + 19 - 4)] =

37+[-25-(-11+19-4)]

37 + [ - 25 + 11 - 19 + 4 ]

37 - 25 + 11 - 19 + 4

12 - 8 + 4

4 + 4

8

5) 60 ÷ {2 . [-7 + 18 ÷ (-3 + 12)]} - [7 . (-3) - 18 + (-2) + 1] =

60:{2.[-7+18:(-3+12)]}-[7.(-3)-18:(-2)+1}

60:{2. [-7+18:9)]}-[-21+9+1}

60:{2. [-7+2]} - [- 11]

60:{2.[-5]} +11

60 : {- 10 } + 11

-6 + 11

5

6) -8 + (-5 + [(8 - 12) + (13 + 12)] - 10) =

-8+{- 5+[-4+12+25]-10}

-8+{-5+33-10}

-8+18

10

7) 3 - (2 + (11 - 15) - [5 + (-3 + 1)] + 8 =

3 -[ 2+(-4)-(5+(-2)+8)]

3 -[ -2 -(13+ (-2)]

3 -[ -2 - (+11)]

3 -[ -13]

-16

8) [-1 + (2² - 5 . 6 )] ÷ (-5 + 2) + 1 =

[ -1 + (4 - 5•6 )] ÷ (-3) + 1

[ -1 + ( 4-30) ] ÷ (-3) + 1

[-1 + (-26) ] ÷ (-3) + 1

[ - 1 - 26 ] ÷ (-3) + 1

-27 ÷ (-3) + 1

9 + 1

10

9) [ √100 - (2² - 8) . 2 - 24] ÷ 2² - (-3 + 2)] =

[10 – (16 – 8) · 2 – 24] ÷ [4 – (-3 + 2)] =

[10 – (8) · 2 – 24] ÷ [4 – (-1)] =

[10 - 16 - 24] ÷ [5] =

-30 ÷ 5 =

-6

10) {[(8 . 4 + 3 ) ÷ 7 + (3 + 15 + 5) . 3] . 2 - (19 - 7) + 6) . 2 + 12 =

{[(32+3) ÷ 7 +(3+3) · 3] · 2 –(12)÷ 6} · 2 + 12=

{[5+18]· 2 – 2} · 2 + 12=

{46-2} · 2 + 12=

88+12=

100

Explicação passo-a-passo:

Espero ter ajudado!