Question

(0,63×10-3,8:4/5)÷15 1/2

Answer 1

0,63*10=6.3 3,8 преврашаем в дробь 3 8/10:4/5=190/40 сокращаем 19/4. 6 3/10 - 19/4 = 127/40:15 127/40:15 1/2 =27/620