\(\dfrac{2}{5}x-\dfrac{3}{4}=\dfrac{5}{20}\)
\(\Leftrightarrow\dfrac{2}{5}x=1\)
\(\Leftrightarrow x=\dfrac{1}{\dfrac{2}{5}}=\dfrac{5}{2}\)
3(1/2-x)-5(x-1/10)=-7/4
4(3/4+x)-1/5=7x-1/7 giúp mik với
X-2/15=-2/3
X+2/3= 33/4:30/17
(70-42/5 X):2/3=39
Tìm \(x\) biết :
a) \(x.\dfrac{3}{7}=\dfrac{2}{3}\)
b) \(x:\dfrac{8}{11}=\dfrac{11}{3}\)
c) \(\dfrac{2}{5}:x=-\dfrac{1}{4}\)
d) \(\dfrac{4}{7}.x-\dfrac{2}{3}=\dfrac{1}{5}\)
e) \(\dfrac{2}{9}-\dfrac{7}{8}.x=\dfrac{1}{3}\)
g) \(\dfrac{4}{5}+\dfrac{5}{7}:x=\dfrac{1}{6}\)
tìm x,biết :
a)\(\frac{12}{7}:x=\frac{-22}{21}\)
b)\(x:\frac{3}{4}=\frac{-5}{6}+\frac{7}{8}\)
c)\(x:\frac{3}{4}+\frac{5}{6}=\frac{7}{8}\)
d)\(\frac{2}{3}:x-\frac{3}{4}=\frac{5}{4}\)
4/5 : ( 4/5 . -5/4) : ( 16/25 - 1/5 )
11/12 : ( 7/9 + -1/3 ) - ( 2/3 - 5/15 )
-2/5 . ( 9/8 + 16/32 -3/4 ) - 9/10
( 4/3 + 8/3 ) . ( 7/4 - 6/4 ) : ( 6/5 + 12/5 + 1/5 )
4/5 : ( 4/5 . -5/4) : ( 16/25 - 1/5 )
11/12 : ( 7/9 + -1/3 ) - ( 2/3 - 5/15 )
-2/5 . ( 9/8 + 16/32 -3/4 ) - 9/10
( 4/3 + 8/3 ) . ( 7/4 - 6/4 ) : ( 6/5 + 12/5 + 1/5 )
5/2-3(1/3-x)=1/4-7x giúp mik với mik đang cần gấp
Tính theo cách hợp lí:
e) -52 . 4 : (-2) - 18 : (-3) + 3
f) -|-16 - 12| : 7 - 7 . (-3)2 - (-6)2
g) (-49 + 13) : (-2)2 - 43 : (-2)3
h) [3 . (-5)5 - 13 . (-5)5 ] : (-5)4
(5+8/17): x +(-4/17):x +(3+1/7) :(17+1/3) = 4/11
