Question

Tìm các số nguyên x, y sao cho (x-1)×(3-y)=-7

Answer 1

x; y la cac so nguyen nen x-1 va 3-y cung la so nguyen.

Vay h cua x-1 va 3-y bang  -7 khi x-1 va 3-y la cac uoc cua -7

x-1	1	-1	7	-7
3-y	-7	7	-1	1
x	2	0	8	-6
y	10	-4	4	2

Answer 2

x; y la cac so nguyen nen x-1 va 3-y cung la so nguyen.

Vay h cua x-1 va 3-y bang  -7 khi x-1 va 3-y la cac uoc cua -7

x-1	1	-1	7	-7
3-y	-7	7	-1	1
x	2	0	8	-6
y	10	-4	4	2

Answer 3

Cai lu nhu Hoang tu dai ngan ha khong lam duoc bai thi thoi, lai di copy bai nguoi khac, xau tinhv, copy de an k a