(x - 2) : 2 = 6:3
(x - 2) : 2 = 2
x - 2 = 2 x 2
x - 2 = 4
x = 4 + 2
x = 6
(x-2):6=6
(x-2) =6x6
x-2 =36
x =36+2
x =38
ok nha bn
(x - 2) : 2 = 6:3
(x - 2) : 2 = 2
x - 2 = 2 x 2
x - 2 = 4
x = 4 + 2
x = 6
cái trước mình tính nhầm =))))
(x - 2) : 2 = 6:3
(x - 2) : 2 = 2
x - 2 = 2 x 2
x - 2 = 4
x = 4 + 2
x = 6
(x-2):6=6
(x-2) =6x6
x-2 =36
x =36+2
x =38
ok nha bn
(x - 2) : 2 = 6:3
(x - 2) : 2 = 2
x - 2 = 2 x 2
x - 2 = 4
x = 4 + 2
x = 6
cái trước mình tính nhầm =))))
Tìm X:
a,2xX-5=21
b,3/4+1/4xX=5/6
c,7/8-1/2xX=5/6
d(1/1x2+1/2x3+1/3x4)x100-[5/2:(X+206/100)]:1/2=89
1. Tính
a) 5/7 x 4 : 5/9
b) 8 x 2/3 : 1/2
c) 6 : 3/5 - 7/6 x 6/7
21/5 x 10/11 + 57/11
2. Tìm x
a) 35/9 : x = 35/6
b) (1/1x2 + 1/2x3 + 1/3x4 +1/4x5 +1/5x6) x 10- x = 0
(6x + 35 ) = 330 : 6
S1= 2/1x2 + 2/2x3 + ...+2/100x101
1.Tìm X :
a,X x 0,4 + X x 1,7 = 11,13
b, 1/1x2 +1/2x3 + 1/3x4 +.................+1/X x ( x+1)=122/123
c,1/3 + 1/6 + 1/10 +............+1/X (x+1):2 = 399/400
Tìm y
y x ( 2/1x2 + 2 / 2x3 + 2 / 3x4 +... + 2/99x100 ) = 198/100
Tìm x:
(x -\(\dfrac{1}{3}\) ) x (\(\dfrac{2}{1x2}\)+ \(\dfrac{2}{2x3}\)+ \(\dfrac{2}{3x4}\) + … + \(\dfrac{2}{9x10}\)) = \(\dfrac{3}{4}\)
y x 1/2x3/4+y:8/5-y/2=1/2
[ 1/3 + 1/5 ] + [ 1/6 - 1/5 ]
3/16 x 7/5 + 3/5 x 9/16
1/1x2 + 1/2x3 + 1/ 3x4 + ...... + 1/2020x2021
1/1x3 + 1/3x5 + 1/5x7 + ..... + 1/2021 x 2023
3/2 x 1/7 x 5/4 + 15/2 x 6/7 x 1/4
NHỜCÁC BN LM GIÚP MIK GẤP CHIỀU NAY MIK CẦN ÒI !!!!!~~~
( 1/1x2 + 1/2x3 + 1/3x4 + ... + 1/9/10 ) x 100 - ( 5/2 : ( x + 206/100 ) : 1/2 = 89