Tìm x
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Bài 3. Tìm x
a) \((5x-1)\left(2x-\frac{1}{3}\right)=0;\)
b) \(-\frac{2}{3}x-\frac{3}{5}=\frac{2}{5};\)
c) \(x-128=\left(\frac{20}{21}-5\right)\cdot\left(\frac{4141}{4242}-1\right)\cdot\left(\frac{636363}{646464}-1\right);\)
d) \((x+1)+(x+2)+(x+3)+\ldots+(x+100)=5750.\)
Bài 3. Tìm x
a) \((5x-1)\left(2x-\frac{1}{3}\right)=0;\)
b) \(-\frac{2}{3}x-\frac{3}{5}=\frac{2}{5};\)
c) \(x-128=\left(\frac{20}{21}-5\right)\cdot\left(\frac{4141}{4242}-1\right)\cdot\left(\frac{636363}{646464}-1\right);\)
d) \((x+1)+(x+2)+(x+3)+\ldots+(x+100)=5750.\)