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Nguyễn Huy Tiệp
Giới thiệu về bản thân
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gọi 2 số đó là a và b . suy ra a-b=32 và 1/3*a=2/5*b . suy ra 15*1/3*a=15*2/5*b . suy ra 5a=6b . suy ra 5a-6b=0 . suy ra 5a-5b-b=0 . suy ra 5(a-b)-b=0 . mà a-b=32 . suy ra 5*32-b=0 . suy ra 160-b=0 nên b=160 . suy ra a-160=32 nên a=192 . vậy số thứ 1 là 192 , số thứ 2 là 160
7.x-8:5=0 7.x-1,6=0 7.x=1,6 x=1,6/7 x=8/35