5^4.20^4/25^5.4^55
mọi ng giúp mk vs
Tính : \(\frac{0,6:\frac{4}{5.}.1,25}{0,64-\frac{1}{25}}+\frac{\left(10-\frac{2}{25}\right):\frac{4}{70}}{\left(6\frac{5}{9}-3\frac{1}{4}\right).2\frac{1}{17}}+\frac{6}{5}.\frac{1}{2}:\frac{3}{5}\)
Tính nhanh:\(\frac{1\times2\times3+2\times4\times6+3\times6\times9+4\times8\times12+5\times10\times15}{1\times3\times5+2\times6\times10+3\times9\times15+4\times12\times20+5\times15\times25}-\frac{1+2+3+2+4+6+3+6+9+4+8+12+5+10+15}{1+3+5+2+6+10+3+9+15+4+12+20+5+15+25}\)
Tính
a. -3/5+1/4+(-3)/10
b.1/5+(-9)/10+(-7)/25
b. 1/5+(-1)/6+1/7+(-1)/8+1/9+1/8+(-1)/7+1/6+(-1)/5
3:1/2=?
1/2:3=?
2.tính theo mẫu
a)9/10*5/6=9*5 10*6=3*3*5 5*2*3*2=3/4
b)6/25:21/20=
40/7*14/5=
17/13:51/26=
Tính :
\(\frac{0,6:\frac{4}{5}.125}{0,64-\frac{1}{25}}+\frac{\left(10-\frac{2}{25}\right):\frac{4}{70}}{\left(6\frac{5}{9}-3\frac{1}{4}\right).2\frac{1}{17}}+\frac{6}{5}.\frac{1}{2}:\frac{3}{5}\)
Tính :
\(A.\dfrac{25}{7}-2+\dfrac{3}{2}\)
\(B.\dfrac{4}{5}x\dfrac{10}{3}:8\)
\(C.\dfrac{7}{3}+\dfrac{2}{5}:\dfrac{1}{6}\)
Tìm x
X×4/5=15
6/5:x=1/3x:2/7=3/5
12/25×x=4/10
Bài 1 :Tính
25-2 : (3/5-1/2) + (5/2 +1/5 * 1/4 )
( 3/10+ 4/5 *1/2 ) : (17/9 -4/3 : 3)
(6 : 3/5 - 7/6 * 3/14) : (21/5*10/11 + 57/11 )
4*1/5 +(1/5- 1/7 ) * (1/5-1/7 ) * (1/2:1/7 )
Giải nhanh giúp mình nha mình đang cần gấp
bài 1: Tính
a 25-2 :(3/5-1/2) + (5/2 +1/5*1/4 )
b(3/10+4/5*1/2):(5/2+1/5*1/4)
c(6:3/5-7/6*3/14):(21/5*10/11*57)
d4*1/5+(1/5-1/7)*(1/2:1/7)
làm nhanh giúp mình nha mình cần gấp
