1/21+2/7; 3/10+2/3; 2 1/5+3/5; 1 1/2+3 2/3; 1/2+1/3+1/5; - вопрос №59092811212731023215351123231213152571513 от marinnka09 16.01.2020 19:23

Question

Математика: 1/21+2/7; 3/10+2/3; 2 1/5+3/5; 1 1/2+3 2/3; 1/2+1/3+1/5; 2/5+7/15+1/3

marinnka09 · Answer

1/21+2/7=1/21+6/21=7/21=1/33/10+2/3=9/30+20/30=29/302 1/5+3/5=11/5+3/5=14/5=2 4/511/2+3 2/3=11/2+11/3=33/6+22/6=55/6=9 1/61/2+1/3+1/5=15/30+10/30+6/30=31/30=1 1/302/5+7/15+1/3=6/15+7/15+5/15= 18/15= 1 3/15= 1 1/5...