Tìm số nguyên x,y thỏa mãn:
a)3x(y+1)+y+1=7
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46. I'm going to have a test tommorrow, so I can't watch the cartoon.
47. Because cartoons are colorful and funny, children enjoy watching them.
48. Who does this house belong to?
49. My school doesn't have many teachers.
50. Tom goes to his office on foot.
Chúc em học tốt!

- There are a desk, an armchair, two computers and a printer in my father's working room.
- My father has a desk, an armchair, two computers and a printer in his working room.

my / living / next / room / room / is / to / the / but / far / bathroom / from / the.
=> Answer:
The living room is next to my room but far from the bathroom.
HOẶC
The living room is next to the bathroom but far from my room.
#hoctot
Ta có 3x( y + 1 ) + y + 1 = 7
3x( y + 1 ) + ( y + 1 ) = 7
( 3x + 1 )( y + 1 ) = 7
Vì x; y nguyên nên 3x + 1 và y + 1 nguyên
Vậy ( 3x + 1 ); ( y + 1 ) ϵ Ư( 7 ) = { 1; -1; 7; -7 }
Lập bảng giá trị
Vậy các cặp số nguyên ( x; y ) cần tìm để 3x( y + 1 ) + y + 1 = 7 là ( 0; 6 ); ( 2; 0 )