A)X+3/7=73 B)x-2/5=3/4-1/6 C)X:3/7=4×3/2

2 bình luận về “A)X+3/7=73 B)x-2/5=3/4-1/6 C)X:3/7=4×3/2”

1. a)x+3/7=7/3

   x=7/3-3/7=49/21-9/21

   x=(49-9)/21=40/21

   Vậy x=40/21

   b)x-2/5=3/4-1/6

   x-2/5=18/24-4/24

   x=14/24=7/12

   x=7/12+2/5

   x=35/60+24/60=(35+24)/60

   x=59/60

   c)x:3/7=4xx3/2

   x:3/7=(4xx3)/2=12/2=6

   x=6xx3/7=(6xx3)/7

   x=18/7

   Vậy x=18/7.

   Trả lời
2. a)x+3/7=73

   x=7/3-3/7

   x=49/21-9/21

   x=40/21

   Vậy  x=40/21

   b)x-2/5=3/4-1/6

   x-2/5=9/12-2/12

   x-2/5=7/12

   x=7/12+2/5

   x=35/60+24/60

   x=59/60

   Vậy  x=59/60

   c)x:3/7=4×3/2

   x:3/7=6

   x=6×3/7

   x=18/7

   Vậy  x=18/7

   Trả lời