3/4 × y + 25% × y + y ÷ 0,5 = 31,5

2 bình luận về “3/4 × y + 25% × y + y ÷ 0,5 = 31,5”

1. 3/4 × y + 25% × y + y ÷ 0,5 = 31,5

   =>3/4 × y + 25/100× y + y :5/10 = 31,5

   =>3/4 × y + 1/4× y + y xx10/5= 31,5

   =>3/4 × y + 1/4× y + y xx2= 31,5

   =>yxx(3/4+1/4+2)=31/5

   =>yxx(1+2)=31,5

   =>yxx3=31/5

   =>y=31,5:3

   =>y=10,5

   Vậy y=10,5

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   Trả lời
2. 3/4xxy+25%xxy+y:0,5=31,5

   3/4xxy+25/100xxy+y:1/2=31,5

   3/4xxy+1/4xxy+yxx2=31,5

   (3/4+1/4+2)xxy=31,5

   3xxy=31,5

   y=31,5:3

   y=10,5

   Vậy y=10,5

    

   Trả lời