А)6: (1/2+1/2) б)12: (1/2+1/2+1/2+1/2). в)(1/5+1/5+1/5)•1/3. - вопрос №88182736121212121212121515151327272727 от slavaglybochka 17.03.2020 19:12

Question

Математика: А)6: (1/2+1/2) б)12: (1/2+1/2+1/2+1/2). в)(1/5+1/5+1/5)•1/3. г)(2/7+2/7+2/7+2/7)•21/8

slavaglybochka · Answer

А)6:(1/2+1/2)= 6:1=6Б)12:(1/2+1/2+1/2+1/2)=12:2=6В)(1/5+1/5+1/5)•1/3=3/5•1/3=3/15=1/5Г)(2/7+2/7+2/7+2/7)•21/8=8/7•21/8 8сокращаем остаётся:7/21=1/3...