Question

Обыкновенные дроби (3/8 -1/20)×10=?

Answer 1

3/8-1/20=15/40-2/40=13/40

13/40*10=13/4=3целых 1/4

Answer 2

$( \frac{3}{8} - \frac{1}{20} ) \times 10 = ( \frac{5 \times 3}{40} - \frac{2}{40} ) \times 10 = \frac{13}{40} \times 10 = \frac{13}{4} = 4 \frac{1}{4}$