4) (3/7)^2.(-7)^4
5) (-11)^12.(4/11)^6
6) (-6)^8.(5/6)^7
a,5(x-2)+3x (x-2)=0
b,2/3+5/2:x=2/4
c,2x(x-1/7)=0
d,11/12-(2/5+x)=2/3
e,3/4+1/4:x=2/5
g,2/3x+5/7=3/10
\(\dfrac{0,75+\dfrac{3}{5}-\dfrac{3}{7}-\dfrac{3}{13}}{2,75+2\dfrac{1}{5}-\dfrac{11}{7}-\dfrac{11}{3}}-\dfrac{0,75-\dfrac{3}{11}-\dfrac{1}{3}}{\dfrac{5}{22}-0,625+\dfrac{5}{18}}\)
tìm x
d)3/2 -4(1/4-x)=2/3-7x
e)3(1/2-x)+1/3=7/6-x
f)4(1/2-x)-5(x-3/10)=7/4
g)-3/2(4/5-2/3)+x=7/6-x
Bài 1:
2/5-11/10<x<-4/9+13/6
giúp với:33
hellu cả lò nhà mik ạ giải giúp mik vs cả lò nhà mik ui
-5/7-(-5/67)+13/30+1/2+(-1 5/6)+1 3/14-(-2/5)
(3 - 1/4 + 2/3) - ( 5 + 1/3 - 6/5 0 - ( 6 - 7/4 + 3/2 )
tính :
S=1+2-3-4+5+6-7-8+9...+98-99-100+101+102
3)tìm x biết
a) \(\dfrac{x}{7}=\dfrac{18}{14}\)
b) \(6:x=1\dfrac{3}{4}:5\)
c) 5,7:0,35= (-x) :0,45
