Question

CIVICZENIA 5
Oblicz.
a) 3 4/7 +5 6/7
b) 5 1/6-3 3/6
c) 2 3/4 × 1 1/5
d) 6 2/3 : 2 2/9 ​

Answer 1

Odpowiedź:

[tex]3 \frac{4}{7} + 5 \frac{6}{7} = 8 \frac{10}{7} = 9 \frac{3}{7} \\ 5 \frac{1}{6} - 3 \frac{3}{6} = 1 \frac{4}{6} \\ 2 \frac{3}{4} \times 1 \frac{1}{5} = \frac{11}{4} \times \frac{6}{5} = \frac{66}{20} = \frac{33}{10} = 3 \frac{3}{10} \\ 6 \frac{2}{3} \div 2 \frac{2}{9} = \frac{20}{3} \div \frac{20}{9} = \frac{20}{3} \times \frac{9}{20} = 3[/tex]