x-2/12 + x-2/20+....+x-2/72
=x-2/3.4+ x-2/ 4.5+...+x-2/8.9
=(x-2).1/3.4.1+(x-2).1/4.5.1+......+(x-2).1/8.9.1
=x-2/1(1/3.4+1/4.5+....+1/8.9)
=x-2(1/3 -1/4 +1/4 -1/5+...+1/8-1/9)
=x-2(1/3-1/9)
=(x-2).2/9
=2x-4/9
Tìm x, biết :x-2/12+x-2/20+x-2/30+x-2/42+x-2/56+x-2/72=16/9
tim x biet :
x-2/12+x-2/20+x-2/30+x-2/42+x-2/56+x-2/72=16/9
Tìm x biết :
x-2/12 + x-2/20 + x-2/30 + x-2/42 + x-2/56 + x-2/72 = 16/9
tìm x:
x/2+x/6+x/12+x/20+x/30+x.42+x/56+x/72+x/90+x=95
Tìm x biết \(\frac{x-2}{12}+\frac{x-2}{20}+\frac{x-2}{30}+\frac{x-2}{42}+\frac{x-2}{56}+\frac{x-2}{72}=\frac{16}{9}\)
Tìm x biết
\(\frac{x-2}{12}+\frac{x-2}{20}+\frac{x-2}{30}+\frac{x-2}{42}+\frac{x-2}{56}+\frac{x-2}{72}=\frac{16}{9}\)
tìm x biết: \(\frac{x-2}{12}+\frac{x-2}{20}+\frac{x-2}{30}+\frac{x-2}{42}+\frac{x-2}{56}+\frac{x-2}{72}=\frac{16}{9}\)(cho kết quả là 10. nêu cách làm)
làm nhanh giùm mo đi, tí mo tick
Tìm x biết :
\(\left(\frac{x-2}{12}\right)+\left(\frac{x-2}{20}\right)+\left(\frac{x-2}{30}\right)+\left(\frac{x-2}{42}\right)+\left(\frac{x-2}{56}\right)+\left(\frac{x-2}{72}\right)=\frac{16}{9}\)
giúp mk nha
121212/161616 - (151515/323232 - x ) = 2
x/2 + x/ 6 + x/12 + x/20 + x/30 + x/42 + x/56 + x/72 + x/90 = 9/5
giải giúp mik với mai mik phải nộp bài rồi xong trình bày bài rồi mik kick cho
Thank You
