Question

AJUTAŢIMĂ VĂ ROG FRUMOS
ÎMI TREBUE URGENT
DAU COROANĂ ŞI 100 DE PUNCTE ​

Answer 1

Răspuns:

Explicație pas cu pas:

$\dfrac{7}{13} + \dfrac{4}{13} = \dfrac{7+4}{13} = \dfrac{11}{13}$

$\dfrac{11}{15} + \dfrac{2}{15} = \dfrac{11+2}{15} = \dfrac{13}{15}$

$\dfrac{13}{18} - \dfrac{7}{18} = \dfrac{13-7}{18} = \dfrac{6^{(6}}{18} = \dfrac{1}{3}$

$\dfrac{22}{35} - \dfrac{13}{35} = \dfrac{22-13}{35} = \dfrac{9^{(3} }{35} = \dfrac{1}{3}$

$\dfrac{\not7}{\not12} \cdot \dfrac{\not3}{\not14} = \dfrac{1}{4} \cdot \dfrac{1}{2} = \dfrac{1}{4 \cdot 2} = \dfrac{1}{8}$

$2\dfrac{1}{7} \cdot \dfrac{7}{9} = \dfrac{\not15}{\not7} \cdot \dfrac{\not7}{\not9} = \dfrac{5}{1} \cdot \dfrac{1}{3} = \dfrac{5}{3}$

$\dfrac{2}{3} : \dfrac{8}{9} = \dfrac{\not2}{\not3} \cdot \dfrac{\not9}{\not8} = \dfrac{1}{1} \cdot \dfrac{3}{4} = \dfrac{3}{4}$

$\dfrac{1}{6} : \dfrac{5}{12} = \dfrac{1}{\not6} \cdot \dfrac{\not12}{5} = \dfrac{1}{1} \cdot \dfrac{2}{5} = \dfrac{2}{5}$