bạn lên gole

= ( 2,78 + 3,22 ) - ( 9,34 + 5,66)

= 6 - 15

= - 9

Mizuki Kanzaki

\(2,78-9,34+3,22-5,66\)

\(=\left(2,78+3,22\right)-\left(9,34+5,66\right)\)

\(=6-15\)

\(=-9\)

a) (- 45,5) . 0,4 =  - 18,2                         

b) ( - 32,2) . (-0,5) = 16,1

c) (- 9,66) : 3,22 =  -3                            

d) (- 88,24) : (- 0,2) = 441,2.

sao ra toàn bài khó hông zợ

nếu không được thì đánh lên google cho nhanh

/ là chia nha các bạn

\(\frac{14\cdot5+80\cdot5}{3\cdot5\cdot23\cdot9+14}=\frac{5\cdot\left(14+80\right)}{3119}=\frac{5\cdot94}{3119}=\frac{470}{3119}\)

\(2020:0,2+2020+2020:0,25\)

\(=2020:\dfrac{1}{5}+2020+2020:\dfrac{1}{4}\)

\(=2020\times5+2020+2020\times4\)

\(=2020\times \left(5+1+4\right)\)

\(=2020\times10\)

\(=20200\)

\(13,25:0,5+13,25:0,2+13,25:0,25\\ =13,25\times2+13,25\times5+13,25\times4\\ =13,25\times\left(2+5+4\right)\\ =13,25\times11\\ =145,75\)

\(=13,25:\left(0,5+0,2+0,25\right)\\ =13,25:1,25=10,6\)

13,25 : 0,5+ 13,25 : 0,2 + 13,25 : 0,25
= 13,25 x2 + 13,25 x 5+ 13,25 x 4
= 13,25x ( 2+ 5+ 4)
= 13,25 x 11
=145,75

     13,25 : 0,5 + 13,25 : 0,2 + 13,25 : 0,25

=   13,25 \(\times\) 2 + 13,25 \(\times\) 5 + 13,25 \(\times\) 4

=   13,25 \(\times\) 2 + 13,25 \(\times\) 5 + 13,25 \(\times\) 3 + 13,25 

=  13,25 \(\times\) ( 2 + 5 + 3) + 13,25

=   13,25 x 10 + 13,25

=    132,5 + 13,25

=  145,75

`13,25:0,5+13,25:0,2+13,25:0,25`

`= 13,25 xx 2 + 13,25 xx 5 + 13,25 xx4`

`= 13,25 xx (2+5+4)`

`= 13,25 xx 11`

`=583/4`

x:3,5=1,08

      x=1,08.3,5

      x=3,78