\(x+\dfrac{4}{5.9}+\dfrac{4}{9.13}+...+\dfrac{4}{41.45}=\dfrac{-37}{45}\\ \Leftrightarrow x+\dfrac{1}{5}-\dfrac{1}{9}+\dfrac{1}{9}-\dfrac{1}{13}+...+\dfrac{1}{41}-\dfrac{1}{45}=\dfrac{-37}{45}\\ \Leftrightarrow x+\dfrac{1}{5}-\dfrac{1}{45}=\dfrac{-37}{45}\\ \Leftrightarrow x+\dfrac{8}{45}=\dfrac{-37}{45}\\ \Leftrightarrow x=-1\)
Tìm x biết x + 4/5.9+4/9.13+4/13.17+...+4/41.45=-37/45
Tìm x biết x+4/5.9 + 4/9.13 +4/13.17 +...............+ 4/41.45 = -37/45
tim x
x+4/5.9+4/9.13+4/13.17+...+4/41.45=37/45
Tìm x .
x + 4/5.9 + 4/9.13 + 4/13.17 + ... + 4/41.45 = -37/45
Tìm x, biết
x + 4/5.9 + 4/9.13 + 4/13.17 +.....+ 4/41.45 = -37/45
Tìm x biết:
\(x+\frac{4}{5.9}+\frac{4}{9.13}+\frac{4}{13.17}+...+\frac{4}{41.45}=\frac{-37}{45}\)
tính
A= 5/1.3+5/3.5+5/5.7+.....+5/99.101
tìm x
x+4/5.9+4/9.13+4/13.17+...+4/41.45=-37/45
Tìm x biết : 7/x + 4/5.9+4/9.13+4/13.17+...+4/41.45=29/45
7/x+(4/5.9+4/9.13+4/13.17+..+4/41.45)=29/45
Ai nhanh mk tick
