rảnh tay

wá ha

ai k mình mình k lại

5+5+5+5+5+5+5+5+5+5+5+5+5+5+5+6+5+7+5+8+9+0+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+9+8+9+8+9+9+9+9+9+9+9+9+9+9+9+100+9000+1000=5x16+6x1+7x1+8x2+9x41+10100=10578

=17x5+6+7+8x3+0+42x9+100+9000+1000=10600

Bài 1:1×2×3×4×5×6×7×8×9×10 bằng mấy? Bài 2:5×5×5×5×5×5×5×5×5×5=3628800

 Bài 2:9×9×9×9×9×9×9×9×9×9 = 3486784401 (bạn k cho mình nha)

bài 1; = 3628800

bài 2; = 9765625

bài 3; =3486784401

5 + 6 + 9 + 5 + 6 + 2 + 5 +5 + 5+ 5 + 5 + 5 + 5  + 2 + 8 + 9 =87

vậy số đó là 87

.

=87 Ai tích mk mk sẽ tích lại

5 + 6 + 9 + 5 + 6 + 2 + 5 +5 + 5+ 5 + 5 + 5 + 5  + 2 + 8 + 9 

=(  5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 +5 ) + ( 6 + 6 ) + ( 9 + 9 ) +  ( 2 + 2 ) + 8

= ( 5 x 9 ) + 12 + 18 + 4 + 8

= 45 + ( 12 + 18 ) + ( 4 + 8 )

= 45 + 30 + 12

= 75 + 12

= 87

Hơi rắc rối nhưng vẫn tk mình nhé !

\(\frac{5}{11}.\frac{4}{9}+\frac{5}{11}.\frac{8}{9}-\frac{5}{11}.\frac{1}{9}\)

\(=\frac{5}{11}\left(\frac{4}{9}+\frac{8}{9}-\frac{1}{9}\right)\)

\(=\frac{5}{11}.\frac{11}{9}=\frac{5}{9}\)

Hbxhshdgcgdvsgbcgdhdyhdndjcjcjdjdj

D=5/3.5+5/5.7+5/7.9+5/9.11+...+5/27.29+5/29.31

2D=10/3.5+10/5.7+10/7.9+10/9.11+...+10/27.29+10/29.31

2D=5/3-5/5+5/5-5/7+5/7-5/9+5/9-5/11+...+5/27-5/29+5/29-5/31

2D=5/3-5/31

2D=155/93-15/93

2D=140/93

D=140/93:2

D=70/93

a: =7+5/11-2-3/7-3-5/11

=2-3/7=11/7

b: =-3/5(5/7+3/7+6/7)

=-3/5*2=-6/5

c: =1/3(4/5+6/5)-4/3

=2/3-4/3=-2/3

d: =5/9(7/13+13-3/13)

=5/9*165/13=275/39

141

duyet di olm

=145 nha bạn

làm ơn lấy máy tính ra

29969063

5 + 5 +  5 + 6 + 65 + 6 + 6 + 6 + 6 + 6 + 6 + 6 + 6 + 6 + 6 + 9 + 49 + 9 + 9 + 5 + 5 + 5 + 3 + 5 = 478.

* Chúc bạn học tốt !

= 253 nha em

\(\frac{1}{5}\left(\frac{9}{5}+\frac{5}{5}\right)=\frac{1}{5}.\frac{14}{5}=\frac{14}{25}\)

\(\frac{1}{5}.\frac{9}{5}+\frac{5}{5}=\frac{9}{25}+\frac{5}{5}=\frac{34}{25}\)

y 1 = 14/25

y 2 = 34/25

1/5 x (9/5 + 5/5) = 14/25

1/5 x 9/5 + 5/5 = 34/25