Tính:
1)(-4/9)3 (-27/20)4
2) (0,2)4 . 56
3) (-0,2)7. 510
4) (0,2)5 . (-5)9
\(0,2+\dfrac{16}{21}-\dfrac{9}{5}+\dfrac{5}{21}\)
Tính nhanh
a)(9/12-2x18):(3 4/5+0,2)
b)21/47+9/45+26/47+4/5
-1/3+(0,2-0,35+5/11)/(0,3+9/16-5/22)
(\(\dfrac{9}{25}-2.18\)):(\(3\dfrac{4}{5}+0,2\))
Thực hiện phép tính
a)\(\dfrac{5^{16}.27^{7}}{125^{5}.9^{11}}\)
b)\((-0,2)^{2}.5-\dfrac{2^{13}.27^{3}}{4^{6}.9^{5}}\)
c)\(\dfrac{5^{6}+2^{2}.25^{3}+2^{3}.125^{2}}{26.5^{6}}\)
\(\left(\dfrac{9}{25}-2x18\right):\left(\dfrac{19}{5}+0,2\right)\)
a) s=(-2/3+1)-(7/5-0,2)+(7/15-1+4/3)
b) s=0,25-9-(-3/4)-[-7/3+(-9/2)]-5/6
Bài 1:
a)x/0,9=5/6
b)-6/x=9/-15
c)14/15:9/10=x:3/7
d)1/3/5 :8=2,5:x
e)3x-7=5/2
f)x:0,2=0,8:x
g)x+11/14-x=2/3
(1/3/5 là 1 và 3/5 nhé)