x+2x+3x+4x+...+100x= (1+2+3+4+5+...+100)x=5050x!
Vay x= \(\frac{-213}{5050}\)
hihi k nha
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x+2x+3x+4x+...+100x= (1+2+3+4+5+...+100)x=5050x!
Vay x= \(\frac{-213}{5050}\)
hihi k nha
x+2x+3x+4x+.........+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
Tìm x biết x+2x+3x+....+100x=-213
tìm x biết
x + 2x + 3x +....+100x = -213
\(a)x+2x+3x+4x+...+100x=-213 b)\frac12x-\frac13=\frac14x-\frac16 c)3.(x-2)+2.(x-1)=10 d)\frac{\mathrm x+1}{\mathrm 3}=\frac{\mathrm x-2}{\mathrm 4} \)
Tìm x biết:
\(a) x+2x+3x+4x+...+100x=-213\)
\(b) \frac12 x-\frac13=\frac14-4\frac16\)
\(c)3(x-2)+2(x-1)=10\)
\(d)\frac{\mathrm x+1}{\mathrm3}=\frac{\mathrm x-2}{\mathrm4}\)
Tìm x biết:
x-2x+3x-4x+5x-6x+......+99x-100x=200
Tìm x
A) 4,5x - 2 = 0,5x + 8,4
B) x + 2x + 3x + 4x + ... + 100x = 6060
Tìm x biết x - 2x + 3x - 4x + 5x - 6x + ... + 99x - 100x = 200.
Trả lời: x =
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