a) -2x+17=15
-2x=-2
x=1
b)2x-5=-5x-26
2x+5x=5-26
7x=-21
x=-3
a, -2x+17=15
15x=15 suy ra x= tự làm
b, 2x+5x=-26+5
7x=-21 suy ra x= tự làm
a) x – 36 : 18 = 12 – 15
b) 92 – (17 + x) = 72
c) 720 : [41 – (2x + 5)] = 40
d) (x + 2)3 - 23 = 41
Tìm x, biết :
a, 2x - (-3x - 17) = 53 - 26 - x
b,5x - (-24) =33-78+4x
c,(7x - 19) - (5x -12) = 3x - (9-2x) -1
d,(2x +5)2 = -125
e,(4x - 3)2 = 289
f,-2*(12-5x)3 = -686
g,2mũ x+5 -3*2mũ x = 928
h,3mũ x +3 mũ x+1 + 3mũ x+2 = 13
-(x/2) + 2x/3 + (x+1)/4 + (2x+1)/6 = 3/8
3/(2x+1) + 10/(4x+2) - 6/(6x+3)=12/26
5/1x6 + 5/ 6x11 + ... +5/(5x+1)(5x+6)=2005/2006
-(x/2) + 2x/3 + (x+1)/4 + (2x+1)/6 = 3/8
3/(2x+1) + 10/(4x+2) - 6/(6x+3)=12/26
5/1x6 + 5/ 6x11 + ... +5/(5x+1)(5x+6)=2005/2006
b -13x=26
c 2x -(-17)=15
d 2x -(-19)=17
e /x+4/=5
-(x/2) + 2x/3 + (x+1)/4 + (2x+1)/6 = 3/8
3/(2x+1) + 10/(4x+2) - 6/(6x+3)=12/26
5/1x6 + 5/ 6x11 + ... +5/(5x+1)(5x+6)=2005/2006
Giải thích hộ :v
tìm x: 2x-5=5x-17.
a) (11 - x) : (-5) = 15
b) (2x + 3)^2022 ) . ( -7x + 84) = 0
c) (x - 3) (x + 1) < 0
Tìm x
15-(x-4)=8
14-(25-8)=x-(19-7)
5x-(-17)=2
(2x-5)+17=6
|x+5|=12
|2x-1|-5=8
