Question

помогите плиз дам 30 баллов

Answer 1

где-то 3.714........

Answer 2

1) 0.9:2.25=0.4
2) 0.75*0.064=0.048
3) 0.4-0.048=0.352
4) 0.2816:0.352=0.8
5)4 1/8:7=33/8*1/7=33/56
6)2 3/40-33/56=83/40-33/56=581/280-165/280=416/280=52/35
7) 1.3:52/35=13/10*35/52=7/8
8) 0.8:7/8=8/10*8/7=64/70=32/35
9) 32/35*4 1/16=32/35*65/16=26/7=3 5/7