Question

a. 1/8+5/9+7/8+13/9
b. 1/5+35/18×54/75

ajutor nu am invatat
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Answer 1

Răspuns:

$a \: \frac{1}{8} + \frac{5}{9} + \frac{7}{8} + \frac{13}{9 } = \frac{1 + 7}{8} + \frac{5 + 13}{9} = \frac{8}{8} + \frac{18}{9} = 1 + 2 = 3$

$b \: \frac{1}{5} + \frac{35}{18(18} \times \frac{54(18}{75} = \frac{1}{5} + 35(5 \times \frac{3}{75(5} = \frac{1}{5} + 7 \times \frac{3(3}{15(3} = \frac{1}{5} + 7 \times \frac{1}{5} = \frac{1}{5} + \frac{7 \times 1}{5} = \frac{1}{5} + \frac{7}{5} = \frac{8}{5} = > 1.6$

Sper ca te-am ajutat!