Các câu hỏi tương tự
tim x dua vao quan he uoc boi:tim so tu nhien x sao cho x-1 la uoc cua 12tim so tu nhien x sao cho 2x+1 la uoc cua 28tim so tu nhien x sao cho x+15 la boi cua x+3tim cac so nguyen x,y sao cho (x+1)(y-2)3tim so nguyen x sao cho(x+2).(y-1)2tim so nguyen to x vua la uoc cua 275 vua la uoc cua 180tim so nguyen to x,y biet x+y12 va UCLL (x:y)5tim so tu nhien x,y biet x+y32 va UCLL (x:y)8tim so tu nhien x biet x chia het cho10; xchia het cho12; x chia het cho15 va 100x150tim so x nho nhat khac 0b biet...
Đọc tiếp
tim x dua vao quan he uoc boi:
tim so tu nhien x sao cho x-1 la uoc cua 12
tim so tu nhien x sao cho 2x+1 la uoc cua 28
tim so tu nhien x sao cho x+15 la boi cua x+3
tim cac so nguyen x,y sao cho (x+1)(y-2)=3
tim so nguyen x sao cho(x+2).(y-1)=2
tim so nguyen to x vua la uoc cua 275 vua la uoc cua 180
tim so nguyen to x,y biet x+y=12 va UCLL (x:y)=5
tim so tu nhien x,y biet x+y=32 va UCLL (x:y)=8
tim so tu nhien x biet x chia het cho10; xchia het cho12; x chia het cho15 va 100<x<150
tim so x nho nhat khac 0b biet x chia het cho 24 va 30
40 chia het cho x . 56 chia het cho x va x>6
Bai 1: Tim x va y
a) ( x+ 5) .( x-3) = 15
b)( 2x -1).(y + 2) =24
c)x.y+y+x =30
d) 3x.y+2x +2y=0
Bài 2: tìm các số nguyên tố P
a) de P +2;P+94 cung la so nguyen to
b) de P+6;P+8;P+12;P+14 cung la so nguyen to
hai so nguyen duong x,y co tong la 51
a tim gia tri lon nhat cua x.y
b tim gia tri nho nhat cua tich x,y, biet rang x va y deu lon hon 1
tim 2 so nguyen x va y sao cho
x.y=x-y(cach lam)
1,Tim cac so nguyen x va y sao cho (x-2)(y-1) =5.
2,Tim so nguyen n sao cho n+5 chia het cho 2n-1
tim tat ca cac so nguyen duong x,y sao cho cac so x2+3.y va y2+3.x deu la so chinh phuong cua 1 so
Tim x
a, tim cac so nguyen x,y sao cho y/3 - 1/x = 1/3
b,tim cac so a va b biet a - b =5 va UCLN (a,b)/BCNN (a,b) =1/6
Luu y a/b tua la a phan b
1,tim cac so nguyen x,y biet: -2/x=y/3 va x<0<y
2, Tim cac so nguyen x,y biet:x-3/y-2=3/2 va x-y=4
tim cac so nguyen x,y sao cho: x.y= -7 va x < y