Question

[Đông joker]

tìm x,y thuộc Nsao cho

a) (2x+1)x(y-3)=10

b)(3x-2)x(2y-3)=1

c)(x+1)x(2y-1)=12

d)x+6=y(x-1)

e)x-3=y(x+2)

Answer 1

[Đỗ Lê Tú Linh]

a)(2x+1)(y-3)=10

2x+1	1	2	5	10
2x	0	1	4	9
x	0		2
y-3	10		2
y	13		5

b)(3x-2)(2y-3)=1

3x-2	1
3x	3
x	1
2y-3	1
2y	4
y	2

c)(x+1)(2y-1)=12

x+1	1	2	3	4	6	12
x	0	1	2	3	5	11
2y-1	12	6	4	3	2	1
2y	13	7	5	4	3	2
y				2		1

d)e) tương tự