\(\frac{a}{5}-\frac{2}{b}=\frac{2}{15}\)
\(=\frac{a.b}{5.b}-\frac{10}{5.b}=\frac{2}{15}\)
\(=\frac{a.b-10}{5.b}\)\(=\frac{2}{15}\)\(\Rightarrow5.b=15\Rightarrow b=3\)
thay b = 3 ta có a = 4
hai cap so nguyen to hon kem nhau 2 don vi goi la cap so nguyen to sinh doi. tim cac cap so nguyen to sinh doi nho hon 100
tim cac cap so nguyen x,y biet /x/+/y/=-5
tim cac cap so nguyen (x,y)biet:
xy+3y+x=2
a,Tim cac so nguyen a,b sao cho a.b=-3
b,tinh tong cac so nguyen x biet: -6<x+2<8
c,tim tat ca cac U(-15)
Tim cac cap so nguyen x,y thoa man
a) xy-5x+y=17
b) x.(y-2)=3 va x>y
Tim cac cap so nguyen [a,b] biet 3\(|a|\)+5\(|b|\)=33
MK can gap
Tim cac gia tri nguyen cua x biet
a, Y=5x+9/ x+3
b, Tim cac cap so nguyen x , y thoa mai he thuc :
(2x-1).(y+4)
tim tat ca cac cap so nguyen to (p;q)thoa man 3p^2+20q=2015
1. tim cac cap so nguyen duong (x, y) sao cho:
2 x3 + xy = 11
2. tim cac cap so nguyen duong (x, y, z)sao cho:
x + y + z = x*y*z
3. tim x thuoc z, biet;
|x| = -2003
|x| = |-2003|
minh dang can gap lam. chieu mai phai nop rui
