Выполните действия:(3/4+1/20)×1/2; (7цел3/5-2цел4/15)×9/32; (5цел1/2+2цел3/5)×5/9.

Question

Выполните действия:(3/4+1/20)×1/2; (7цел3/5-2цел4/15)×9/32; (5цел1/2+2цел3/5)×5/9.

Answer 1

=(15/20+1/20)*1/2=16/20*1/2=4/5*1/2=2/5

=(7 9/15-2 4/15)*9/32=5 5/15*9/32=5 1/3*9/32=16/3*9/32=3/2=1 1/2

=(5 5/10+2 6/10)*5/9=7 11/10*5/9=81/10*5/9=9/2=4 1/2