Thực hiện phép tính:
----- Nội dung ảnh -----
Bài 1. Thực hiện phép tính:
a) \( \frac{13}{15} - 0,75 + \left( \frac{104}{195} + 25\% \right) \cdot \frac{24}{47} - \frac{12}{13} : 3 \)
b) \( \left[ \frac{6}{7} + \frac{3}{7} - (-3) \right] \cdot \left\{ \frac{2}{5} \cdot \left(-\frac{7}{8}\right) + \frac{3}{5} \cdot \left(-\frac{3}{2}\right) \right\} \)
c) \( (-1)^2 \cdot \frac{2}{5} + \left( 1 - \frac{3}{2} \right)^2 \cdot \frac{1}{1 - \frac{5}{6}} \)
d) \( 500 - 5 \left[ 409 - (2^3 \cdot 3 - 21)^2 - 1724 \right] \)
e) \( \left( \frac{1}{2} - \frac{1}{3} \right)^2 \cdot \left[ \left( -\frac{5}{36} \right) \cdot \left( -\frac{5}{36} \right)^0 \right] \)
Bài 2. Tìm x biết:
a) \( \frac{1}{4} - 3x + \frac{3}{2} = -0,75 \)
b) \( \frac{2}{7} - \left( \frac{2}{3} + 2x \right) = \frac{5}{7} \)
c) \( \left( -\frac{2}{3}x - \frac{3}{5} \right) \left( \frac{3}{-2} - \frac{10}{3} \right) = \frac{2}{5} \)
d) \( -3 \cdot \frac{2}{7} - 2x + \frac{3}{4} = -2 \)
Bài 1. Thực hiện phép tính:
a) \( \frac{13}{15} - 0,75 + \left( \frac{104}{195} + 25\% \right) \cdot \frac{24}{47} - \frac{12}{13} : 3 \)
b) \( \left[ \frac{6}{7} + \frac{3}{7} - (-3) \right] \cdot \left\{ \frac{2}{5} \cdot \left(-\frac{7}{8}\right) + \frac{3}{5} \cdot \left(-\frac{3}{2}\right) \right\} \)
c) \( (-1)^2 \cdot \frac{2}{5} + \left( 1 - \frac{3}{2} \right)^2 \cdot \frac{1}{1 - \frac{5}{6}} \)
d) \( 500 - 5 \left[ 409 - (2^3 \cdot 3 - 21)^2 - 1724 \right] \)
e) \( \left( \frac{1}{2} - \frac{1}{3} \right)^2 \cdot \left[ \left( -\frac{5}{36} \right) \cdot \left( -\frac{5}{36} \right)^0 \right] \)
Bài 2. Tìm x biết:
a) \( \frac{1}{4} - 3x + \frac{3}{2} = -0,75 \)
b) \( \frac{2}{7} - \left( \frac{2}{3} + 2x \right) = \frac{5}{7} \)
c) \( \left( -\frac{2}{3}x - \frac{3}{5} \right) \left( \frac{3}{-2} - \frac{10}{3} \right) = \frac{2}{5} \)
d) \( -3 \cdot \frac{2}{7} - 2x + \frac{3}{4} = -2 \)