\(12x-33=3^2\times3^3\\ 12x-33=9\times27\\ 12x-33=243\\ 12x=243+33\\ 12x=276\\ x=276:12\\ x=23.\)
`12x - 33= 3^2 xx 3^3`
`=> 12x - 33 = 243`
`=> 12x = 276`
`=> x = 23`.
\(12x-33=3^2\times3^3\\ 12x-33=9\times27\\ 12x-33=243\\ 12x=243+33\\ 12x=276\\ x=276:12\\ x=23.\)
`12x - 33= 3^2 xx 3^3`
`=> 12x - 33 = 243`
`=> 12x = 276`
`=> x = 23`.
7/2x3/4+17/8x2/3+3/4x1/2+7/8x3/3
A+3/(2x3)+3/(3x5)+3/(5x7)+....+3/(99x101)
Tìm A
3+5x4:2x3:9-9 = ???
3/1x2+3/2x3+3/3x4...+3/14x15=?
Giúp mình với nhé,mình cần gấp lắm.
3/1x2-5/2x3+7/3x4-9/4x5+.......-197/98x99
5/2x3/7-3/4:7/3=
5/4:15/12-5/4:1/2=
1/26+7/30+12/26+8/3
720:(yx2+yx3)=2x3
ai nhanh nhất tick 3 cái
(x+1/2x3)+(X+1/3x4)+(X+1/4x5)+(X+1/5x6)=25/3
Tìm x:
(x -\(\dfrac{1}{3}\) ) x (\(\dfrac{2}{1x2}\)+ \(\dfrac{2}{2x3}\)+ \(\dfrac{2}{3x4}\) + … + \(\dfrac{2}{9x10}\)) = \(\dfrac{3}{4}\)
Tính nhanh: 3/1x2+3/2x3+3/3x4+3/4x5+3/5x6+...+3/9x10+77/2x9+77/9x16+77/16x23+...+77/93x100
Giúp mình với nhé!