Question

A)-2[4.(3-8)]

B)-5.[20-(13-17)]

C)18: (-9)

D)16:4

E)-10:2

F)-15:(15)

G)21:(-7)

H)-[4+2.(-5)]:(-2-1)

I)30-3.(-4)-30:(-10)

J)[6.(7+2) +6]:[(-2).(-3)]


K)[(2-3).2+3.(-2+1)]:(-1-4)
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Answer 1

Explicação passo-a-passo:

A) -2[4.(3-8)]

-2[4×(-5)]

-2[-20]

40

B) -5.[20-(13-17)]

-5×[20-(-4)]

-5×[20+4]

-5×24

-120

C)

$\frac{18}{ - 9} = - 2$

D)

$\frac{16}{4} = 4$

E)

$\frac{ - 10}{2} = - 5$

F)

$\frac{ - 15}{15} = - 1$

G)

$\frac{21}{ - 7} = - 3$

H) -[4+2.(-5)]:(-2-1)

-[4-10] ÷ (-3)

-[-6] ÷ (-3)

6 ÷ (-3)

$\frac{6}{ - 3} = - 2$

I) 30-3.(-4)-30:(-10)

30+12+3

45

J) [6.(7+2) +6]:[(-2).(-3)]

[6×9+6]÷[-6]

[54+6]÷[-6]

60÷[-6]

$\frac{60}{ - 6} = - 10$

K) [(2-3).2+3.(-2+1)]:(-1-4)

[-1)×2+3×(-1)]÷(-5)

[-2+(-3)]÷(-5)

[-2-3]÷(-5)

[-5]÷(-5)

$\frac{ - 5}{ - 5} = 1$