36*4+29/36*5-9
36/(1*3*5) + 36/(3*5*7) + 36/(5*7*9) + ... + 36/(25*27*29)
CTR:36/1*3*5+36/3*5*7+36/5*7*9+...+36/25*27*29<3
Đúng / Sai
59+64=36+64+59 ..............
129+157-29=129-29+157 ............
129+157-29 = 157+ 129-29 ...........
4+16 x 25 = 16 + 4 x 25 .............
21 + 49 : 7 = 49 + 21 : .................
(36 + 45 ) : 9 = (45+36 ) :9 .............
59 + 64 = 36 + 63 + 59 _Sai_
129 + 157 - 29 =129 - 29 + 157 _Đúng_
129 + 157 - 29 = 157 + 129 - 29 _Đúng_
4 +16 x 25 = 16 + 4 x 25 _Sai_
21 + 49 : 7 = 49 + 21 : 7 _Sai_
(36 + 45 ) : 9 = (45+36 ) : 9 _Đúng_
(Cái này tính nhẩm là ra thôi bạn ạ! Đúng cho mình 1 tick nhé bạn!)
Tính nhanh
1, \(10\frac{5}{4}-4\frac{9}{14}-6\frac{5}{7}+\frac{7}{3}\)
2, \(\frac{29}{32}\left(\frac{41}{36}-\frac{32}{58}\right)-\frac{41}{36}\left(\frac{29}{32}+\frac{18}{41}\right)\)
CMR 36 p 1*3*5+36 p 3*5*7+36 p 5*7*9+....+36 p 25*27*29<3
5×36^9×4^6-2×12^14×3^6÷5×2^28×3^19-7×2^29×3^18
Tính
5×36^9 ×4^6 -2 × 12^14 ×27^2
5×2^9 ×6^19 -7×2^29 ×17^6
( x + 4 / 3 ) * 7 / 4 = 5 - 7 / 6
62 / 7 * x = 29 / 9 : 3 / 36
Hãy tích cho tui đi
vì câu này dễ mặc dù tui ko biết làm
Yên tâm khi bạn tích cho tui
Tui sẽ ko tích lại bạn đâu
THANKS
\(\left(x+\frac{4}{3}\right)\cdot\frac{7}{4}=5-\frac{7}{6}\)
\(\left(x+\frac{4}{3}\right)\cdot\frac{7}{4}=\frac{23}{6}\)
\(\left(x+\frac{4}{3}\right)=\frac{23}{6}:\frac{7}{4}\)
\(x+\frac{4}{3}=\frac{46}{21}\)
\(x=\frac{46}{21}-\frac{4}{3}\)
\(x=\frac{6}{7}\)
\(b.\frac{62}{7}\cdot x=\frac{29}{9}:\frac{3}{36}\)
\(\frac{62}{7}\cdot x=\frac{116}{3}\)
\(x=\frac{116}{3}:\frac{62}{7}\)
\(x=\frac{406}{93}\)
Bỏ ngoặc rồi tinh
1/ -7264+(1543+7264)
2/ (144-97)-144
3/(-145)-(18-145)
4/ 111+(-11+27)
5/(27+514)-(486-73)
6/(36+79)+(145-79-36)
7/10-[12-(-9-1)]
8/(38-29+43)-(43+38)
9/271-[(-43)+271-(-17)]
10/-144-[29-(+144)-(+144)]
1) - 7264 + ( 1543 + 7264 )
= - 7264 + 1543 + 7264
= ( - 7264 + 7264 ) + 1543
= 0 + 1543
= 1543
2) ( 144 - 97 ) - 144
= 144 - 97 - 144
= ( 144 - 144 ) - 97
= 0 - 97
= - 97
3) ( - 145 ) - ( 18 - 145 )
= -145 - 18 + 145
= ( - 145 + 145 ) - 18
= 0 - 18
= - 18
4) 111 + ( - 11 + 27 )
= 111 - 11 + 27
= 100 + 27
= 127
các câu còn lại bn tự làm nha
1. -7264+(1543+7264)
=-7264+1543+7264
=[-7264+7264]+1543
=0
1,-7264+(1543+7264)=-7264+1543+7264=(-7264+7264)+1543=0+1543=1543
2,(144-97)-144=144-97-144=(144-144)-97=0-97=-97
3,(-145)-(18-145)=-145-18+145=(-145+145)-18=0-18=-18
4,111+(-11+27)=111-11+27=100+27=127
5,(27+514)-(486-73)=27+514-486+73=(27+73)+(514-486)=100+28=128
6,(36+79)+(145-79-36)=36+79+145-79-36=(36-36)+(79-79)+145=0+0+145=145
7,10-[12-(-9-1)]=10-[12+9+1]=10-12-9-1=10-10-12=0-12=-12
8,(38-29+43)-(43+38)=38-29+43-43-38=(38-38)+(43-43)-29=0+0-29=-29
9,271-[(-43)+271-(-17)]=271-[-43+271+17]=271+43-271-17=(271-271)+(43-17)=0+26=26
10,-144-[29-(+144)-(+144)]=-144-[29-144-144]=-144-[29-144-144]=-144-29+144+144=(-144+144)+(144-29)=0+115=115