\(4^x+342=7^y\)
=>\(4^x+343-1=7^y\)
=>\(4^x+7^3-1=7^y\)
=>\(4^x+7^3=1+7^y\)
=>y=3
=>\(4^x=1\)
=>x=0
vậy x=0;y=3
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\(4^x+342=7^y\)
=>\(4^x+343-1=7^y\)
=>\(4^x+7^3-1=7^y\)
=>\(4^x+7^3=1+7^y\)
=>y=3
=>\(4^x=1\)
=>x=0
vậy x=0;y=3
tim x,y thuoc N biet x × y + y =20 y<x
tim x,y thuoc N, biet x.y+2.x+y-13=0
tim x ,y thuoc N biet x.y + 2.x +y-13=0
tim x,y thuoc N biet 59x+26y=2016 (x,y nguyen to)
(2x-1)(3y-2)=27 tim x y biet x y thuoc n
tim x,y thuoc N biet (x-6).(2y+3)=8
Tim x;y thuoc N biet (x-1)(2y+3)=26
tim x,y thuoc N biet 59x+26y=2016 (x,y nguyen to)
Tìm x, y thuoc Z biet
xy + 3x - 7y = 21