Các câu hỏi tương tự
(1+2+3+....+90)x(12,34-6,68):[1/3 +1/4 +1/5 +1/6 ]
(1+2+3+....+90)x(12,34-6,68):[\(\frac{1}{3}\)+\(\frac{1}{4}\)+\(\frac{1}{5}\)+\(\frac{1}{6}\)]
\(R=\left(1+2+3+...+90\right).\left(12,34-6,68\right):\left(\frac{1}{3}+\frac{1}{4}+\frac{1}{5}+\frac{1}{6}\right)\)
Mình cần gấp !
( 1+2+3+...+90) x (12x34 + 6x68) + (1/3 + 1/4 + 1/5 + 1/6
tim x biet,
5x + 5x+2= 650
Thuc hien phep tinh
(1+2+3+4+...+90).(12.34 - 6.68) : (1/3+1/4+1/5+1/6)
Tìm x biết:
1, | 3x -5 |-1/7=1/3
2, (3/5x - 2/3x - x) .1/7=-5/21
3, 1/3x - 2=3/5
4, 0,2+|x-2,3| = 1,1
5, (5x-1).(2x+1/3) =0
6. 2/3: x +6 =4
7, 5.(x+2)3 + 7=2
8, 5|x+1| /2= 90/ |x+1|
9, 14- |3x/2 -1 |= 9
Giúp mk vs ạ
x+1/2 + x+1/3 + x+1/4= x+1/ 5 + x+1/6
x+1/99 + x+2/98 + x+3/97= x+10/90 + x+11/89 + x+12/98
Q=1/2*3*4+1/3*4*5+1/4*5*6+........+1/90*91*92
( 1 + 2 + 3 + ... + 90 ) ( 12 . 34 - 6 . 68 ) : ( 1 / 3+ 1 / 4 + 1 / 5 + 1 / 6 )