=) (x+1)(1/10+1/11+1/12)=(x+1)(1/13+1/14)
=) (x+1)(1/10+1/11+1/12-1/13-1/14)=0
ma 1/10+1/11+1/12-1/13-1/14 khác 0
=)x+1=0
=)x=-1
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Tìm x biết:
a)\(\frac{x+1}{10}+\frac{x+1}{11}+\frac{x+1}{12}=\frac{x+1}{13}+\frac{x+1}{14}\)
b)\(\frac{x+1}{14}+\frac{x+2}{13}=\frac{x+3}{12}+\frac{x+4}{11}\)
tìm x , biết:
\(\frac{x+1}{10}+\frac{x+1}{11}+\frac{x+1}{12}+\frac{x+1}{13}+\frac{x+1}{14}=0\)
a) Tìm x biết x \(\in\)Z và ( x2 - 5 ) . ( x2 - 24 ) < 0
b) Tìm x biết : b1 ) \(\frac{x+1}{10}+\frac{x+1}{11}+\frac{x+1}{12}=\frac{x+1}{13}+\frac{x+1}{14}\)
b2 ) \(\frac{x+1}{14}+\frac{x+2}{13}=\frac{x+3}{12}+\frac{x+4}{11}\)
trình bày rõ ràng hộ mk nhed !!! ^ - ^
\(\frac{x+1}{10}+\frac{x+1}{11}+\frac{x+1}{12}+\frac{x+1}{13}+\frac{x+1}{14}\)
Tím x:
\(\frac{x+1}{10}+\frac{x+1}{11}+\frac{x+1}{12}=\frac{x+1}{13}+\frac{x+1}{14}\)
Giá trị của x2014 biết x thỏa mãn \(\frac{x+1}{10}+\frac{x+1}{11}+\frac{x+1}{12}=\frac{x+1}{13}+\frac{x+1}{14}\)
P/s : Rảh nên đăng, nhanh tk cho. 3tk :)
Tìm tập hợp các giá trị của \(x\) thỏa mãn \(\frac{x+1}{10}+\frac{x+1}{11}+\frac{x+1}{12}=\frac{x+1}{13}+\frac{x+1}{14}\)
Tìm x, biết:frac{3}{left(x+2right)left(x+5right)}+frac{5}{left(x+5right)left(x+10right)}+frac{7}{left(x+10right)left(x+17right)}frac{x}{left(x+2right)left(x+17right)}left(xnotin-2;-5;-10;-17right)frac{2}{left(x-1right)left(x-3right)}+frac{5}{left(x-3right)left(x-8right)}+frac{12}{left(x-8right)left(x-20right)}-frac{1}{x-20}-frac{3}{4}Với xnotin1;3;8;20frac{x+1}{10}+frac{2+1}{11}frac{x+1}{12}frac{x+1}{13}+frac{x+1}{14}frac{x-10}{30}+frac{x-14}{43}+frac{x-5}{95}+frac{x-148}{8}0
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Tìm x, biết:
\(\frac{3}{\left(x+2\right)\left(x+5\right)}+\frac{5}{\left(x+5\right)\left(x+10\right)}+\frac{7}{\left(x+10\right)\left(x+17\right)}=\frac{x}{\left(x+2\right)\left(x+17\right)}\left(x\notin-2;-5;-10;-17\right)\)
\(\frac{2}{\left(x-1\right)\left(x-3\right)}+\frac{5}{\left(x-3\right)\left(x-8\right)}+\frac{12}{\left(x-8\right)\left(x-20\right)}-\frac{1}{x-20}=-\frac{3}{4}\)
Với \(x\notin1;3;8;20\)
\(\frac{x+1}{10}+\frac{2+1}{11}\frac{x+1}{12}=\frac{x+1}{13}+\frac{x+1}{14}\)
\(\frac{x-10}{30}+\frac{x-14}{43}+\frac{x-5}{95}+\frac{x-148}{8}=0\)
frac{x+1}{10}+frac{x+1}{11}+frac{x+1}{12}frac{x+1}{13}+frac{x+1}{14}frac{x+4}{2006}+frac{x+3}{2007}frac{x+2}{2008}+frac{x+1}{2009}frac{x+1945}{45}+frac{x+1954}{54}frac{x+1975}{75}+frac{x+1969}{69}frac{x-99}{5}+frac{x-97}{7}frac{x-95}{9}+frac{x-93}{11}frac{x+2008}{10}+frac{x+2010}{9}frac{x+2012}{8}+frac{x+2014}{7}
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\(\frac{x+1}{10}+\frac{x+1}{11}+\frac{x+1}{12}=\frac{x+1}{13}+\frac{x+1}{14}\)\(\frac{x+4}{2006}+\frac{x+3}{2007}=\frac{x+2}{2008}+\frac{x+1}{2009}\)\(\frac{x+1945}{45}+\frac{x+1954}{54}=\frac{x+1975}{75}+\frac{x+1969}{69}\)\(\frac{x-99}{5}+\frac{x-97}{7}=\frac{x-95}{9}+\frac{x-93}{11}\)\(\frac{x+2008}{10}+\frac{x+2010}{9}=\frac{x+2012}{8}+\frac{x+2014}{7}\)