Question

Даю балы з діями и с обяснениям...​

Answer 1

Ответ:

$\frac{3}{5} - \frac{1}{10} = \frac{6 - 1}{10} = \frac{5 \div5}{10 \div 5} = \frac{1}{2}$

$\frac{3}{4} - \frac{7}{20} = \frac{15 - 7}{20} = \frac{8 \div 2}{20 \div 2} = \frac{4}{10} = 0.4$

$\frac{7}{15 } - \frac{13}{30} = \frac{14 - 13}{30} = \frac{1}{3}$

$\frac{5}{6} - \frac{2}{15} = \frac{(5 \times 5) - (2 \times 2)}{30} = \frac{25 - 4}{30} = \frac{21 \div 3}{30 \div 3} = \frac{7}{10} = 0.7$

Answer 2

Ответ:

Пошаговое объяснение:

1) 3/5 - 1/10 = 6/10 - 1/10 = 5/10 = 1/2

2) 7/15 - 13/30 = 14/30 - 13/30 = 1/30

3) 3/4 - 7/20 = 15/20 - 7/20 = 8/20 = 2/5

4) 5/6 - 2/15 = 25/30 - 4/30 = 21/30 = 7/10