tính nhanh
9764/36615+36x85x20/25x84x34+2,2+3/19/133
Câu hỏi:
\(\frac{19}{X+Y}+\frac{19}{Y+Z}+\frac{19}{Z+X}=\frac{7xX}{Z+Y}+\frac{7xY}{X+Z}+\frac{7xZ}{X+Y}=\frac{133}{10}\)\(\frac{133}{10}\)
Tính X+Y+Z=?
Tính A=x+y+z biết 19/x+y + 19/y+z + 19/z+x= 7x/y+z + 7x/z+x + 7x/x+y= 133/10
Tính nhanh: (-19/9/17 + 18/4/17):(11/7 + 11/13 + 2/3/4 - 2,2)x(0.75 -0.6+3/7+3/13)
Tính tổng \(x+y+z\) biết \(\dfrac{19}{x+y}+\dfrac{19}{y+z}+\dfrac{19}{z+x}=\dfrac{7z}{x+y}+\dfrac{7z}{z+x}=\dfrac{133}{10}\)
Đó mời giải
cho ba so x,y,z thoa man : 19/x+y+19/y+z+19/z+x=7x/y+z+7y/z+x+7z/x+z=133/10
Tính tổng \(x+y+z\) biết \(\dfrac{19}{x+y}+\dfrac{19}{y+z}+\dfrac{19}{z+x}=\dfrac{7z}{x+y}+\dfrac{7z}{z+x}=\dfrac{133}{10}\)
Rồi bảo ai dốt
cho ba so x,y,z thoa man : 19/x+y+19/y+z+19/z+x=7x/y+z+7y/z+x+7z/x+z=133/10
tinh (x+y+z)^2
Tinh nhanh :\(-19\frac{9}{17}+18\frac{4}{17}:\frac{11}{7}+\frac{11}{13}+2\frac{3}{4}-2,2.\left(0,75-0,6+\frac{3}{7}+\frac{3}{13}\right)\)