tìm x biết
\(\frac{x}{6}\)+ \(\frac{x}{10}+\frac{x}{15}+\frac{x}{21}+\frac{x}{28}+\frac{x}{39}=\frac{8}{9}\)
Những câu hỏi liên quan
tìm x biết \(\frac{x}{6}+\frac{x}{10}+\frac{x}{15}+\frac{x}{21}+\frac{x}{28}+\frac{x}{36}+\frac{x}{45}+\frac{x}{55}+\frac{x}{66}+\frac{x}{78}+\frac{x}{78}=\frac{220}{39}\)
\(\frac{x}{6}+\frac{x}{10}+\frac{x}{15}+\frac{x}{21}+\frac{x}{28}+\frac{x}{36}+\frac{x}{45}+\frac{x}{55}+\frac{x}{66}+\frac{x}{78}+\frac{x}{78}=\frac{220}{39}\)
\(\Leftrightarrow x\left(\frac{1}{6}+\frac{1}{10}+\frac{1}{15}+\frac{1}{21}+\frac{1}{28}+\frac{1}{36}+\frac{1}{45}+\frac{1}{55}+\frac{1}{66}+\frac{1}{78}+\frac{1}{78}\right)=\frac{220}{39}\)
\(\Leftrightarrow x\cdot\frac{20}{39}=\frac{220}{39}\Rightarrow x=11\)
Đúng 0
Bình luận (0)
\(\frac{x}{6}+\frac{x}{10}+\frac{x}{15}+\frac{x}{21}+\frac{x}{28}+\frac{x}{36}+\frac{x}{45}+\frac{x}{55}+\frac{x}{66}+\frac{x}{78}+\frac{x}{78}=\frac{220}{39}\)
\(=>x=\frac{1}{6}+\frac{1}{10}+\frac{1}{15}+\frac{1}{21}+\frac{1}{28}+\frac{1}{36}+\frac{1}{45}+\frac{1}{55}+\frac{1}{66}+\frac{1}{78}+\frac{1}{78}=\frac{220}{39}\)
\(x\cdot\frac{20}{39}=\frac{220}{39}\)
\(x=\frac{220}{39}:\frac{20}{39}=11\)
Đúng 0
Bình luận (0)
Tìm x, biết:
\(\frac{x-2}{6}+\frac{x-2}{10}+\frac{x-2}{15}+\frac{x-2}{21}+\frac{x-2}{28}+\frac{x-2}{72}=\frac{32}{9}\)
Tìm x, biết:
\(x=\left(2-\frac{5}{3}+\frac{7}{6}-\frac{9}{10}+\frac{11}{15}-\frac{13}{21}+\frac{15}{28}-\frac{17}{36}+\frac{19}{45}\right)\times\frac{5}{3}\)
Xem thêm câu trả lời
tìm x,biết:a)frac{2}{left(x+2right)left(x+4right)}+frac{4}{left(x+4right)left(x+8right)}+frac{6}{left(x+8right)left(x+14right)}frac{x}{left(x+2right)left(x+14right)}b)frac{x+1}{10}+frac{x+1}{11}+frac{x+1}{12}frac{x+1}{13}+frac{x+1}{14}c)left(x+2right)^2frac{38}{25}+frac{9}{10}-frac{11}{15}+frac{13}{21}-frac{15}{28}+frac{17}{36}-...+frac{197}{4851}-frac{199}{4950}giúp tớ với,huhu
Đọc tiếp
tìm x,biết:
a)\(\frac{2}{\left(x+2\right)\left(x+4\right)}+\frac{4}{\left(x+4\right)\left(x+8\right)}+\frac{6}{\left(x+8\right)\left(x+14\right)}=\frac{x}{\left(x+2\right)\left(x+14\right)}\)
b)\(\frac{x+1}{10}+\frac{x+1}{11}+\frac{x+1}{12}=\frac{x+1}{13}+\frac{x+1}{14}\)
c)\(\left(x+2\right)^2=\frac{38}{25}+\frac{9}{10}-\frac{11}{15}+\frac{13}{21}-\frac{15}{28}+\frac{17}{36}-...+\frac{197}{4851}-\frac{199}{4950}\)
giúp tớ với,huhu
\(\frac{2}{3}x\frac{5}{6}x\frac{9}{10}x\frac{14}{15}x\frac{20}{21}x\frac{27}{28}\)
Tìm x,y,z thuộc Z biết:frac{3}{x-5}frac{-4}{x+2} frac{-4}{8}frac{x}{-10}frac{-7}{x}frac{z}{-24} -frac{42}{7} x -frac{24}{6}frac{x}{-2}frac{-8}{x} frac{-28}{4}le xlefrac{-21}{7} frac{-2}{x}frac{y}{3} frac{2x-9}{240}frac{39}{80}frac{-8}{15} frac{x}{40} frac{-7}{15}
Đọc tiếp
Tìm x,y,z thuộc Z biết:
\(\frac{3}{x-5}=\frac{-4}{x+2}\) \(\frac{-4}{8}=\frac{x}{-10}=\frac{-7}{x}=\frac{z}{-24}\) \(-\frac{42}{7}< x< -\frac{24}{6}\)
\(\frac{x}{-2}=\frac{-8}{x}\) \(\frac{-28}{4}\le x\le\frac{-21}{7}\) \(\frac{-2}{x}=\frac{y}{3}\) \(\frac{2x-9}{240}=\frac{39}{80}\)
\(\frac{-8}{15}< \frac{x}{40}< \frac{-7}{15}\)
\(\frac{3}{x-5}=-\frac{4}{x+2}\)
\(\Leftrightarrow3\left(x+2\right)=-4\left(x-5\right)\)
\(\Leftrightarrow3x+6=-4x+20\)
\(\Leftrightarrow7x=14\)
\(\Leftrightarrow x=2\)
\(\frac{x}{-2}=-\frac{8}{x}\)
\(\Leftrightarrow x^2=16\)
\(\Leftrightarrow x=\pm4\)
\(-\frac{2}{x}=\frac{y}{3}\)
\(\Leftrightarrow xy=-6\)
\(\Leftrightarrow x;y\inƯ\left(-6\right)=\left\{\pm1;\pm2;\pm3;\pm6\right\}\)
Xét bảng
| x | 1 | -1 | 2 | -2 | 3 | -3 | 6 | -1 |
| y | -6 | 6 | -3 | 3 | -2 | 2 | -1 | 6 |
Vậy.................
\(\frac{2x-9}{240}=\frac{39}{80}\)
\(\Leftrightarrow2x-9=\frac{240.39}{80}\)
\(\Leftrightarrow2x-9=117\)
\(\Leftrightarrow2x=126\)
\(\Leftrightarrow x=63\)
Đúng 0
Bình luận (0)
Tìm x biết
(x-2)2=\(=\frac{38}{25}+\frac{9}{10}-\frac{11}{15}+\frac{13}{21}-\frac{15}{28}+\frac{17}{36}-...+\frac{197}{4851}-\frac{199}{4950}\)
2 Tìm số nguyên x biết
a\(\frac{x}{6}+\frac{x}{10}+\frac{x}{15}+\frac{x}{21}+\frac{x}{28}+\frac{x}{36}+\frac{x}{45}+\frac{x}{55}+\frac{x}{66}+\frac{x}{78}=\frac{220}{39}\)\(\frac{220}{39}\)
b 52x-3 - 3. 52= 52
3.Cho A= 3+ 32+ 34+ 390
Chứng tỏ A chia hết cho 11 và 13
1Tính.frac{18,4.0,3.7,5.4,8}{2,5.4,6.9,6.0,9}2.Tĩm x,y,zfrac{x}{13}frac{-15}{39}frac{20}{y}b.frac{-7}{x}frac{14}{16}frac{y}{32}c.frac{24}{x}frac{y}{32}frac{-6}{z}frac{3}{2}d.frac{-10}{15}frac{x}{-9}frac{-8}{y}frac{z}{-21}3.Tìm x, biết:frac{x+1}{6}frac{8}{3}Mong các bạn giúp mình!
Đọc tiếp
1Tính
.\(\frac{18,4.0,3.7,5.4,8}{2,5.4,6.9,6.0,9}\)
2.Tĩm x,y,z
\(\frac{x}{13}=\frac{-15}{39}=\frac{20}{y}\)
b.\(\frac{-7}{x}=\frac{14}{16}=\frac{y}{32}\)
c.\(\frac{24}{x}=\frac{y}{32}=\frac{-6}{z}=\frac{3}{2}\)
d.\(\frac{-10}{15}=\frac{x}{-9}=\frac{-8}{y}=\frac{z}{-21}\)
3.Tìm x, biết:
\(\frac{x+1}{6}=\frac{8}{3}\)
Mong các bạn giúp mình!
\(\text{3 Giải}\)
\(\frac{x+1}{6}=\frac{8}{3}=\frac{16}{6}\Rightarrow x+1=16\Rightarrow x=15.\text{Vậy: x=15}\)
Đúng 0
Bình luận (0)