tìm x:
- ( 3x + 1 ) . ( 8 - 5 ) = ( 2x + 1 ) . ( - 3 )
2x + 15 = 3x - 17
3x - 11 = x + 31
Cho số tự nhiên x thỏa mãn 3x -17=31 giá trị của x là gì ?
a) 2x+(-31)-(-42)=-3x-45
b) (-12)-(13-2x)=15-(-17)-x
1) 3x-(4+2x)=11
2) 4x+5=11+2x
3) 7x-17=31+x
a, 57-63+43-17
b,(-257-265)-(135-257)
c,|x-11|=7
d,(3x-12)(x+31)=0
13/17-23/31+4/17-8/31
Tìm X
e) – 40 – (– 3 – 33) + (40 – x) = – (– 47) f) x(3x – 9). (121 – x2) = 0
g) – 62 – (38 + x) + 2x = – 100 h) (x + 1)2.(x2 + 1) = 0
i) (x – 12) – (2x + 31) = 6 k) 17/ (x + 3)3 : 3 – 1 = – 10
Tìm X
e) – 40 – (– 3 – 33) + (40 – x) = – (– 47) f) x(3x – 9). (121 – x2) = 0
g) – 62 – (38 + x) + 2x = – 100 h) (x + 1)2.(x2 + 1) = 0
i) (x – 12) – (2x + 31) = 6 k) 17/ (x + 3)3 : 3 – 1 = – 10
Tìm X
e) – 40 – (– 3 – 33) + (40 – x) = – (– 47) f) x(3x – 9). (121 – x2) = 0
g) – 62 – (38 + x) + 2x = – 100 h) (x + 1)2.(x2 + 1) = 0
i) (x – 12) – (2x + 31) = 6 k) 17/ (x + 3)3 : 3 – 1 = – 10