110 - 5x = 20 + 2
110 - 5x = 22
5x = 110 - 22
5x = 78
x = 78 : 5
x = 17,6
\(110-5x-2=20\)
\(=110-5x=20+2\)
\(=110-5x=22\)
\(5x=22-110\)
\(5x=-88\)
\(x=-88:5=-17,6\)
Tìm x : |x+ 1/2|+|x+1/6|+|x+1/12|+|x+1/20|+...+|x+1/110|=11x
tìm x biết : (x+1/2)+(x+1/6)+(1/12)+(x+1/20)+...+(x+1/110) =11x
Tìm x, biết:
\(\)|x+\(\dfrac{1}{2}\)|+|x+\(\dfrac{1}{6}\)|+\(\left|x+\dfrac{1}{12}\right|\)+\(\left|x+\dfrac{1}{20}\right|\)+...+\(\left|x+\dfrac{1}{110}\right|\)=11x
Bài 4. Tìm x biết:
a) a) 5x(12x + 7) – 3x(20x – 5) = - 100
b) 0,6x(x – 0,5) – 0,3x(2x + 1,3) = 0,138
c) 6x(5x + 3) + 3x(1 – 10x) = 7
Tìm x:
1, |5x+13|=2x-7
2,|2x|+|3x-8|-|4x+1|=5x-2
3, |x+1|+|x-3|+|x-10|=20
Tìm x, biết:
x3 - 5x2 + 4x - 20 = 0
Tìm x biết: \(\left|x+\frac{1}{2}\right|+\left|x+\frac{1}{6}\right|+\left|x+\frac{1}{12}\right|+\left|x+\frac{1}{20}\right|+...+\left|x+\frac{1}{110}\right|=11x\) = 11x
|x+1/2|+|x+1/6|+|x+1/12|+|x+1/20|+...+|x+1/110|=11x
tìm x,y nguyên thỏa mãn
3x2-3xy-y-5x=-20
1.tính \(\dfrac{1}{99.97}-\dfrac{1}{97.95}-\dfrac{1}{95.93}-...-\dfrac{1}{5.3}-\dfrac{1}{3.1}\)
2. tìm x. biết : \(|x+\dfrac{1}{2}|+|x+\dfrac{1}{6}|+|x+\dfrac{1}{12}|+|x+\dfrac{1}{20}|+...+|x+\dfrac{1}{110}|=11x\)
3. tính gtri b thức C= \(2x^5-5y^3+2015\) tại x, y thỏa mãn: \(|x-1|+\left(y+2\right)^{20}=0\)
