20,17 x 97 + 20,17 : 0,125 - 20,17 : 0,25 - 20,17

= 20,17 x 97 + 20,17 x 8 - 20,17 x 4 - 20,17 x 1

= 20,17 x ( 97 + 8 - 4 - 1 )

= 20,17 x 100

= 2017

=> 20,17 x ( 97 + 8 - 4-1)

=20,17 x 100 =2017

bằng 1

nếu bạn mở ngoặc

\(=0\cdot20.17+0\)

\(=0+0=0\)

\(k\)\(cho\)\(minh\)\(nha\)

-385,6589 đúng luôn ó

20,17 x 76,8 + 20,17 x 23,2  = 20,17 x (76,8 + 23,2)

= 20,17 x      100

= 2017

=20,17(31,06+68,94)

=20,17.100

=2017

20,17*31,06+68,94*20,17

=20,17*(31,06+68,94)

=20,17*100

=2017

bằng 2017

Trả lời

\(20,17\cdot125-25\cdot20,17\)

\(=20,17\cdot\left(125-25\right)\)

\(=20,17\cdot100\)

\(=2017\)

20,17 * ( 125 - 25)

= 20,17 * 100

= 2017

20,17x(125-25)

=20,17x100

=2017

a) \(\dfrac{11}{9}+\dfrac{7}{6}.\left(2-\dfrac{1}{3}\right)=\dfrac{11}{9}+\left(\dfrac{7}{6}.\left(2-\dfrac{1}{3}\right)\right)=\dfrac{11}{9}+\left(\dfrac{7}{6}.\dfrac{5}{3}\right)\)

\(=\dfrac{11}{9}+\dfrac{35}{18}=\dfrac{22}{18}+\dfrac{35}{18}=\dfrac{22+35}{18}=\dfrac{57}{18}=\dfrac{19}{6}\)

b) \(20,17.43+57.20,17=20,17\left(43+57\right)=20,17.100=2017\)

a,11/9 + 7/6 . ( 2 - 1/3)

=.

=

b, 20,17 . 43 + 57 .20,17

=867,31 + 1149,69

=2016,79

Chúc bạn học tốt

a) \(20,17:\frac{1}{63}+20,17:\frac{1}{63}\)

\(=2.\left(20,17:\frac{1}{63}\right)\)

\(=2.\left(1270,71\right)=2541,42\)

b) 145+9+13+...+97+101

=145+(9+13+...+97+101)

Số số hạng là : (101-9):4+1=24

= 145+((101+9).24:2)=145+1320=1465

2218.7

Đầy đủ nha bạn

x - 2017 = 201,7

x = 201,7 + 2017 

x = 2218,7

vậy x = ...

2218.7:D

X - 2017 = 201.7

X = 201.7 + 2017

X =2218.7

X - 2017 = 20,17 x 10

X - 2017 = 20,17

x = 2017 + 201,7

x = 2218,7