Question

вычислите: а)15+8,71. б)34-0,45

Answer 1

1/5 + 8 .71  = 0.2 + 8.71 = 8.91
===
3/4 - 0.45 = 0.75 - 0.45 = 0.3 

Answer 2

спасибо

Answer 3

а) 1/5+8.71=1/5*20+871/100=20/100+871/100=891/100
б) 3/4-0.45=0.75-0.45=0.3