Tính. Tìm x biết
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Bài 1. Tính
a) \( \frac{7}{12} + \frac{8}{11} + \frac{5}{12} = \frac{3}{11} \)
b) \( \frac{15}{2} + \frac{4}{3} = \frac{15}{30} \)
c) \( \frac{2}{3} + \frac{4}{5} = \frac{5}{4} \)
d) \( \frac{2}{3} + \frac{1}{5} = \frac{3}{25} \)
Bài 2. Tìm x biết
a) \( \frac{3}{x} - \frac{x}{7} = 3 \)
b) \( x - 1 = \frac{2}{5} \)
c) \( x \cdot 1 = \frac{2}{3} \)
d) \( x + 1 = 2 \)
e) \( x + 4 = -\frac{5}{4} \)
f) \( x - \frac{1}{22} = -\frac{3}{11} \)
Bài 1. Tính
a) \( \frac{7}{12} + \frac{8}{11} + \frac{5}{12} = \frac{3}{11} \)
b) \( \frac{15}{2} + \frac{4}{3} = \frac{15}{30} \)
c) \( \frac{2}{3} + \frac{4}{5} = \frac{5}{4} \)
d) \( \frac{2}{3} + \frac{1}{5} = \frac{3}{25} \)
Bài 2. Tìm x biết
a) \( \frac{3}{x} - \frac{x}{7} = 3 \)
b) \( x - 1 = \frac{2}{5} \)
c) \( x \cdot 1 = \frac{2}{3} \)
d) \( x + 1 = 2 \)
e) \( x + 4 = -\frac{5}{4} \)
f) \( x - \frac{1}{22} = -\frac{3}{11} \)