1)x-1/2=3/10.5/6 2)-5/6-x=7/12+-1/3

2 bình luận về “1)x-1/2=3/10.5/6 2)-5/6-x=7/12+-1/3”

1. 1)x-1/2=3/10. 5/6

   x-1/2 = 1/4

   x= 1/4+1/2

   x= 3/4

   Vậy x= 3/4

   2)-5/6-x=7/12+ -1/3

   -5/6 -x = 1/4

   x= -5/6 -1/4

   x= -13/12

   Vậy x= -13/12

   Trả lời
2. 1) x – 1/2 = 3/10 . 5/6

   ⇔ x – 1/2 = 15/60

   ⇔ x – 1/2 = 1/4

   ⇔ x = 1/4 + 1/2

   ⇔ x = 1/4 + 2/4

   ⇒ x = 3/4

   2) -5/6 – x = 7/12 + ( -1/3 )

   ⇔ -5/6 – x = 7/12 + ( -4/12 )

   ⇔ -5/6 – x = 3/12

   ⇔ -5/6 – x = 1/4

   ⇔ x= -5/6 – 1/4

   ⇔ x = -20/24 – 6/24

   ⇒ x = -26/24 = -13/12

    

   Trả lời