Question

Б) 3/5 + 7/9
А) (8/11 - 3/22) * 44
решите

Answer 1

$\frac{3}{5} + \frac{7}{9} = \frac{3 \times 9}{45} + \frac{7 \times 5}{45} = \frac{27}{45} + \frac{35}{45} = \\ = \frac{62}{45} = 1 \frac{17}{45}$

$( \frac{8}{11} - \frac{3}{22} ) \times 44 = 26\\ \frac{8}{11} - \frac{3}{22} = \frac{16}{22} - \frac{3}{22} = \frac{13}{22} \\ \frac{13}{22} \times 44 = 13 \times 2 = 26$