Выполните умножение 1)8, 9/20* 2/13 2)10, 1/2* 2/7 3)3, 1/9* 3/8 4)10, 1/5* 10/17 5)5,...

Question

Выполните умножение
1)8, 9/20* 2/13
2)10, 1/2* 2/7
3)3, 1/9* 3/8
4)10, 1/5* 10/17
5)5, 1/3* 3/8
6)5/6 * 1, 6/5
7)9, 1/7* 3/4
8)3/11* 5, 1/2
СРОЧНО!

Answer 1

=169/20*2/13=13/10=1ц3/10
=21/2 * 2/7 = 21*2 / 2*7 = 3
=28/9*3/8 =28*3 / 9*8 = 7/6=1ц1/6
=51/5 * 10/17=51*10/5*17=6
=16/3*3/8=16*3 / 3*8 = 2
=5/6*11/5 = 11/6 = 1ц5/6
=64/7 * 3/4 = 64*3 / 7*4=48/7=6ц6/7
=3/11*11/2=3*11/11*2=3/2=1,5