tính bằng cách thuân tiện: A=2018/2019 x 8/7 + 2018/2019 x 3/8 – 2018/2019 x 1/4 help meee!

2 bình luận về “tính bằng cách thuân tiện: A=2018/2019 x 8/7 + 2018/2019 x 3/8 – 2018/2019 x 1/4 help meee!”

1. A=2018/2019 xx8/7+2018/2019xx3/8-2018/2019xx1/4

   =2018/2019xx(8/7+3/8-1/4)

   =2018/2019xx71/56

   =(143278)/113064

   Trả lời
2. A=2018/2019 xx 8/7+2018/2019 xx 3/8-2018/2019 xx 1/4

   =2018/2019 xx (8/7+3/8-1/4)

   =2018/2019 xx (64/56+21/56-14/56)

   =2018/2019 xx 71/56

   =71639/56532

   Trả lời