1/ 4 × 4 3/4 * 16/57+(4 3/4 + 1 2/3)*16/21+2/27*4 - вопрос №19931741443416574341231621227412 от rtrc2002 21.06.2020 22:55

Question

Математика: 1/ 4 × 4 3/4 * 16/57+(4 3/4 + 1 2/3)*16/21+2/27*4 1/2=

rtrc2002 · Answer

1)4  3/4+ 1  2/3=19/4+5/3=57/12+20/12=77/12
2)1/4* 4  3/4=1/4* 19/4=19/16
3)19/16* 16/57=1/1* 1/3=1/3
4)77/12* 16/21=11/3 * 4/3=44/9
5)2/27* 4 1/2=2/27* 9/2=1/3*1/1=1/3
6)1/3+44/9=3/9+44/9=47/9
7)47/9+1/3=47/9+3/9=50/9=5  5/9