Question

URGENTE



Resolva as expressões
a 27÷9+(12x4-1)=
b 3+12x6-4x5+12÷6=
c (100÷6+2×10)÷(8×10-15×4)=
d (3×10-4×5÷2)-5x3=

Answer 1

Olá,

Vamos lá,

a
=27÷9+(12x4-1)=
= 3 + ( 48-1)
= 3 + 47
= 50

b
=3+12x6-4x5+12÷6
=3+72-20+2
= 77-20
= 57

c
=(100÷6+2×10):(8×10-15×4)=
=(16,66+20):(80-60)
= 36,66 : 20
= 1,833

d
=(3×10-4×5÷2)-5x3
=(30 - 20 :2)-15
=(30-10)-15
=20 - 15
= 5

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Answer 2

a

=27÷9+(12x4-1)=

= 3 + ( 48-1)

= 3 + 47

= 50

b

=3+12x6-4x5+12÷6

=3+72-20+2

= 77-20

= 57

c

=(100÷6+2×10):(8×10-15×4)=

=(16,66+20):(80-60)

= 36,66 : 20

= 1,833

d

=(3×10-4×5÷2)-5x3

=(30 - 20 :2)-15

=(30-10)-15

=20 - 15

= 5