Question

câu 1 ; 85\(\div\)96 = \(\frac{a}{96}\)

câu 2; x-\(\frac{2}{9}\)= \(\frac{1}{6}\)

câu 3 ; tìm x biết ;\(\frac{1}{6}\)+x =\(\frac{2}{9}\)

 

Answer 1

câu 1 a=85

câu 2\(\frac{7}{18}\)

câu 3 \(\frac{1}{18}\)

Answer 2

Câu 1:a=85

Câu 2:x=7/18

Câu 3:x=1/18

Answer 3

 câu 1 : \(85\):    \(96\) = \(\frac{85}{96}\)

câu 2  :\(\frac{2}{9}\)\(=\)\(\frac{12}{54}\),\(\frac{1}{6}\)\(=\)\(\frac{9}{54}\).\(x\)-    \(\frac{12}{54}\)  =    \(\frac{9}{54}\).

\(x\)=  \(\frac{9}{54}\) +     \(\frac{12}{54}\)=   \(\frac{9+12}{54}\) =    \(\frac{21}{54}\)

câu 3   : \(\frac{1}{6}\) =    \(\frac{9}{54}\) ,    \(\frac{2}{9}\)=    \(\frac{12}{54}\).  \(\frac{9}{54}\)+    \(x\) =    \(\frac{12}{54}\)

  \(x\)=   \(\frac{12}{54}\) -     \(\frac{9}{54}\) =   \(\frac{12-9}{54}\)=   \(\frac{3}{54}\)

\(x\)