1, Tìm x, y thuộc Z:
a, \(\frac{x}{7}-\frac{1}{2}=\frac{1}{y+1}\)
b, \(\frac{5}{x}-\frac{y}{4}=\frac{1}{8}\)
c, \(\frac{2}{y}-\frac{1}{x}=\frac{8}{x\cdot y}+1\)
2, Tìm a, b, c thuộc N:
\(\frac{1}{a}+\frac{1}{b}+\frac{1}{c}=\frac{4}{3}\)
tìm x,y$$N* sao cho
a \(\frac{1}{x}+\frac{1}{y}=1\)
b \(\frac{1}{x}+\frac{y}{2}=\frac{5}{8}\)
Tìm x;y thuộc N :
25 - y2=8(x - 2009)2
Tìm x thuộc Z biết:
a)\(2x+\frac{1}{7}=\frac{1}{y}\)
b)\(\frac{5}{x}+\frac{y}{4}=\frac{1}{8}\)
c)\(\frac{x}{8}-\frac{1}{y}=\frac{1}{4}\)
1,Tìm cặp số nguyên x,y,z
\(\frac{1}{x}+\frac{1}{y}+\frac{1}{z}=1\)
2,Tìm x,y nguyên
\(\frac{5}{x}+\frac{y}{4}=\frac{1}{8}\)
tìm x
\(\frac{1}{6}.x+\frac{1}{10}-\frac{4}{15}.x+1=0\)
tìm x, y \(\in\)Z
\(\frac{5}{x}+\frac{4}{y}=\frac{1}{8}\)
Tìm cặp số nguyên x , y sao cho
a) \(\frac{y}{5}+\frac{1}{10}=\frac{1}{x}\)
b)\(\frac{x}{4}-\frac{1}{2}=\frac{3}{y}\)
tìm x,y.z \(\in\)N* sao cho
a \(\frac{1}{x}+\frac{1}{y}=1\)
b \(\frac{1}{x}+\frac{1}{y}+\frac{1}{z}=1\)
c \(\frac{1}{x}+\frac{1}{y}=\frac{1}{z}\)
Tìm x,y\(\in\)N* thỏa mãn \(\frac{1}{x}+\frac{1}{y}=\frac{1}{8}\)
tìm x; y nguyên biết:
a,\(\frac{1}{x+\frac{1}{y+\frac{1}{z}}}=1-\frac{1}{2+\frac{1}{3}}\)
b,\(\frac{x}{8}-\frac{2}{y}=\frac{3}{4}\)
c,\(\frac{x}{2}+\frac{3}{y}=\frac{5}{4}\)