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\(\frac{5}{3}+\frac{5}{6}-x=\frac{2}{9}\)
\(\frac{30}{18}+\frac{15}{18}-x=\frac{4}{18}\)
\(x=\frac{30}{18}+\frac{15}{18}-\frac{4}{18}\)
\(x=\frac{41}{18}\)
\(\frac{5}{3}+\frac{5}{6}-x=\frac{2}{9}\)
\(\frac{30}{18}+\frac{15}{18}-x=\frac{2}{9}\)
\(\frac{45}{18}-x=\frac{2}{9}\)
\(x=\frac{45}{18}-\frac{2}{9}\)
\(x=\frac{45}{18}-\frac{4}{18}\)
\(x=\frac{41}{18}\)
Vậy \(x=\frac{41}{18}\)
\(\frac{6}{7}+\frac{2}{5}-\frac{1}{2}+2\frac{38}{91}-\frac{4}{5}=\frac{27300}{31850}+\frac{12740}{31850}-\frac{15925}{31850}+\) \(2\frac{13300}{31850}\)\(-\frac{25480}{31850}\)
\(=2\frac{27300+12740-15925+13300-25480}{31850}\)\(=2\frac{341}{910}\)
HỌC TỐT!!!
7/3+5/6+1/9+11/7+3/14-4/7=(7/3+5/6)+(1/9+3/14)+(11/7-4/7)
19/6+41/126+7/7=283/63
6 2/7 + 7 3/5 + 8 6/9 + 9 1/4 + 2/5 + 5/7 + 1/3 x 3/4 + 1967
= 44/7 + 38/5 + 78/9 + 37/4 + 2/5 + 5/7 + 1/3 + 1967
= ( 44/7 + 5/7 ) + ( 38/5 + 2/5 ) + ( 26/3 + 1/3 ) + ( 37/4 + 3/4 ) +1967
= 7 + 8 + 9 + 10 + 1967
= 15 + 9 + 10 + 1967
= 24 + 10 + 1967
= 34 + 1967
= 2001
\(a.\frac{7}{3}+\frac{5}{6}+\frac{1}{9}\)
\(=\frac{42}{18}+\frac{15}{18}+\frac{2}{18}\)
\(=\frac{42+15+2}{18}\)
\(=\frac{59}{18}\)
\(\frac{5}{6}+\frac{1}{12}+\frac{2}{3}+\frac{2}{7}+\frac{1}{25}+\frac{1}{4}-\frac{5}{42}\)
\(=\left(\frac{5}{6}+\frac{2}{7}-\frac{5}{42}\right)+\left(\frac{1}{12}+\frac{2}{3}+\frac{1}{4}\right)+\frac{1}{25}\)
\(=\left(\frac{35}{42}+\frac{12}{42}-\frac{5}{42}\right)+\left(\frac{1}{12}+\frac{8}{12}+\frac{3}{12}\right)+\frac{1}{25}\)
\(=\frac{42}{42}+\frac{12}{12}+\frac{1}{25}=1+1+\frac{1}{25}=2\frac{1}{25}\)
NÀY HẢ BẠN ƠI:
\(\frac{2}{3}+\frac{4}{9}-x=\frac{5}{6}\)
\(\frac{10}{9}-x=\frac{5}{6}\)
\(x=\frac{10}{9}-\frac{5}{6}=\frac{5}{18}\)
k mk nha
\(\frac{2}{3}\)+ \(\frac{4}{9}\)- \(\frac{5}{6}\)
= \(\frac{12}{18}\)+\(\frac{8}{18}\)- \(\frac{15}{18}\)
= \(\frac{20}{18}\)- \(\frac{15}{18}\)
= \(\frac{5}{18}\)
Chúc bạn học tốt