Question

calcule
a)18÷(-9) =
b)16÷4=
c)-10÷2=
d)-15÷(-15) =
e)21÷(-7) =
f)7.(-1+2)=
g)(5-3).(-2)=
h)(-1).(4-5)=
i)(7-4).3=
j)[(2+3).(-5)]=
6.calcule o valor das expressões
a)-[4+2.(-5)]:(-21)=
b)30-3.(-4)-30:(-10)=
c)[6.(-7+2)+6]:[(-2.(-3)]=
d)[(2-3).2+3.(-2+1)]:(-1-4)=​

Answer 1

a)18÷(-9) = -2

b)16÷4= +3

c)-10÷2= -5

d)-15÷(-15) = +1

e)21÷(-7) = -3

f)7.(-1+2)= 7.1 = +7

g)(5-3).(-2)= 2.(-2) = -4

h)(-1).(4-5)= -1.(-1) = +1

i)(7-4).3= 3.3 = +9

j)[(2+3).(-5)]= [5.(-5)] = -25

6.calcule o valor das expressões

a)-[4+2.(-5)]:(-21)=

-[4-10]:(-21)

6:(-21)

-6/21 simplificando -2/7

b)30-3.(-4)-30:(-10)=

30+12+3

45

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

[6(-5)+6]÷[6]

[-30+6]÷6

-24÷6

-4

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

[-1.2+3(-1)]:(-5)

[-2-3]:(-5)

-5:(-5)

+1

❤️ Ótima Semana ❤️❤️

10/10/21