Question

GENTE ME AJUDA

⦁ { [ ( 18 – 3 ) + ( 7 + 5) – 2 ] + 5 } – 12 =
⦁ 38 – { 20 – [ 22 – ( 5 + 3) + ( 7 – 4 +1)]} =
⦁ 5² + 2³ - 2 x (3 + 9) =
⦁ 6² : 3² + 4 x 10 – 12 =
⦁ [ 4² + ( 5 – 3)³] : ( 9 – 7)³ =

Answer 1

{[(18–3)+(7+5)–2]+5}–12

{[(15)+(7+5)–2]+5}–12

{[15+(7+5)–2]+5}–12

{[15+(12)–2]+5}–12

{[15+12–2]+5}–12

{[15+10]+5}–12

{[25]+5}–12

{25+5}–12

{30}–12

30–12

18



38–{20–[22–(5+3)+(7-4+1)]}

38–{20–[22–(8)+(7-4+1)]}

38–{20–[22–8+(7-4+1)]}

38–{20–[22–8+(3+1)]}

38–{20–[22–8+(4)]}

38–{20–[22–8+4]}

38–{20–[14+4]}

38–{20–[18]}

38–{20–18}

38–{2}

38–2

36



5²+2³-2x(3+9)

5²+2³-2x(12)

5²+2³-2x12

5²+2³-24

25+2³-24

25+8-24

25+(-16)

25-16

9



6²÷3²+4x10–12

6²÷3²+40–12

6²÷9+40–12

36÷9+40–12

4+40–12

44–12

32



[4²+(5–3)³]÷(9–7)³

[4²+(2)³]÷(9–7)³

[4²+2³]÷(9–7)³

[4²+2³]÷(2)³

[4²+2³]÷2³

[16+2³]÷2³

[16+8]÷2³

[24]÷2³

24÷2³

24÷8

3