=>-5(y+5)=2(7-y)
=>-5y-25=14-2y
=>-25-14=5y-2y
-39=3y
=>y=-39:3=-13
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=>-5(y+5)=2(7-y)
=>-5y-25=14-2y
=>-25-14=5y-2y
-39=3y
=>y=-39:3=-13
so nguyen y thoa man y-5/7-y= 2/-3
so nguyen y thoa man y+5/7-y=2/-5 la
tim cac so nguyen duong x y thoa man \(\frac{x}{2}+\frac{x}{y}-\frac{3}{2}=\frac{10}{y}\)
so nguyen y thoa man y+5 phan 7-y= 2 phan 5 la
Cho x;y la so nguyen sao cho | x | + | y | = 5. So cap so nguyen ( x;y ) thoa man la
so cap x;y nguyen thoa man x>y va x/5=7/y la giup mik nhe mik tik cho !
so cap so nguyen (x;y) thoa man (2x-5)(y-6)=17
so cap (x;y) nguyen thoa man (x+1)(y+2)=7
a, co bao nhieu cap so nguyen ( x,y ) thoa man x + y=1
b. co bao nhieu cap so nguyen ( x,y ) thoa man x.2 + y =1