x+2x+3x+....+100x=-213
(1+2+3+...+100)x=-213
(\(\frac{100.\left(100+1\right)}{2}\))x=-213
5050.x=-213
x=-213:5050
x=-0,042 178 217
tìm x biết
x + 2x + 3x +....+100x = -213
Tìm giá trị x, y, z:
a. (5x-2)(-1/3-2x)=0
b. x/2=y/3 với xy=54
c. x+2x+3x+4x+...+100x=-213
x+2x+3x+4x+.........+100x=-213
\(x+2x+3x+4x+.....+100x=-213\)
Tìm x biết:
\(a) x+2x+3x+4x+...+100x=-213\)
\(b) \frac12 x-\frac13=\frac14-4\frac16\)
\(c)3(x-2)+2(x-1)=10\)
\(d)\frac{\mathrm x+1}{\mathrm3}=\frac{\mathrm x-2}{\mathrm4}\)
Tìm x biết:
x-2x+3x-4x+5x-6x+......+99x-100x=200
\(a)x+2x+3x+4x+...+100x=-213 b)\frac12x-\frac13=\frac14x-\frac16 c)3.(x-2)+2.(x-1)=10 d)\frac{\mathrm x+1}{\mathrm 3}=\frac{\mathrm x-2}{\mathrm 4} \)
Tìm x biết x - 2x + 3x - 4x + 5x - 6x + ... + 99x - 100x = 200.
Trả lời: x =
giúp mik nhék
Tìm x
a)x+2x+3x+4x+...+100x=-213
b)x+1/3=x-2/4
c)x-6/7+x-7/8+x-8/9=x-9/10+x-10/11
d)x+32/11+x+23/12=x+38/13+x+27/14
e)x-1/2004+x-2/2003-x-3/2002+x-4/2001
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