Tìm x, biết
giải dc cho 5đ
----- Nội dung ảnh -----
Bài 2. Tìm x, biết:
a) \(\frac{2}{3} + \frac{1}{3} = x = \frac{1}{5}\)
b) \(\left(0.25x\right) \frac{2}{3} : \frac{7}{3} = \frac{5}{8}\)
c) \(\left(x + \frac{1}{4}\right)^2 + \frac{11}{25} = \frac{20}{25}\)
d) \(-\frac{8}{13} + \frac{7}{17} + \frac{21}{13} < x \leq -\frac{9}{14} + 4 - \frac{5}{14} \quad (x \in \mathbb{Z})\)
----- Nội dung ảnh -----
Bài 2. Tìm x, biết:
a) \(\frac{2}{3} + \frac{1}{3} = x = \frac{1}{5}\)
b) \(\left(0.25x\right) \frac{2}{3} : \frac{7}{3} = \frac{5}{8}\)
c) \(\left(x + \frac{1}{4}\right)^2 + \frac{11}{25} = \frac{20}{25}\)
d) \(-\frac{8}{13} + \frac{7}{17} + \frac{21}{13} < x \leq -\frac{9}{14} + 4 - \frac{5}{14} \quad (x \in \mathbb{Z})\)