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\(1-\left(5\frac{4}{9}+y-7\frac{7}{18}\right):15\frac{3}{4}=0\)
\(1-\left(\frac{49}{9}+y-\frac{133}{18}\right):\frac{63}{4}=0\)
\(1-\left(\frac{49}{9}+y-\frac{133}{18}\right)\times\frac{4}{63}=0\)
\(1-\frac{28}{81}-y\times\frac{4}{63}+\frac{38}{81}=0\)
\(1+\frac{38}{81}-\frac{28}{81}-y\times\frac{4}{63}=0\)
\(1+\frac{10}{81}-y\times\frac{4}{63}=0\)
\(\frac{91}{81}-y\times\frac{4}{63}=0\)
\(y\times\frac{4}{63}=\frac{91}{81}\)
\(y=\frac{91}{81}:\frac{4}{63}\)
\(y=\frac{637}{36}\)
P/s : Số hơi to
\(1-\left(5\frac{4}{9}+y-7\frac{7}{18}\right):15\frac{3}{4}=0\)
\(\Rightarrow1-\left(\frac{49}{9}+y-\frac{133}{18}\right):\frac{63}{4}=0\)
\(\Rightarrow\left(\frac{98}{18}+y-\frac{133}{18}\right):\frac{63}{4}=1-0\)
\(\Rightarrow\left(-\frac{35}{18}+y\right):\frac{63}{4}=1\)
\(\Rightarrow-\frac{35}{18}+y=1\times\frac{63}{4}\)
\(\Rightarrow\frac{-35}{18}+y=\frac{63}{4}\)
\(\Rightarrow y=\frac{63}{4}--\frac{35}{18}\)
\(\Rightarrow y=\frac{63}{4}+\frac{35}{18}\)
\(\Rightarrow y=\frac{637}{36}\)
Vậy \(y=\frac{637}{36}\)
Giúp mình giải bài này nhé , mình đang rất gấp.
Tìm x biết : 1 - ( 5 4/9 + x - 7 7/18 ) : 15 3/7 = 0
=>\(\left(\frac{49}{9}+x-\frac{133}{18}\right):\frac{108}{7}=1\)
=>\(\frac{49}{9}+x-\frac{133}{18}=\frac{108}{7}\)
=>\(\frac{49}{9}+x=\frac{108}{7}+\frac{133}{18}\)
=>\(\frac{49}{9}+x=\frac{2875}{126}\)
=>\(x=\frac{2975}{126}-\frac{49}{9}\)
=>\(x=\frac{2189}{126}\)
2189/162
nhớ đưa 100000000000000000000000000000000000000000000000000000000k ok
bài2 \(x\times\dfrac{15}{16}-x\times\dfrac{4}{16}=2\)
\(x\times\dfrac{11}{16}=2\)
\(x=2:\dfrac{11}{16}\)
\(x=\dfrac{32}{11}\)
Bài 1 :
\(\dfrac{x}{16}\times\left(2017-1\right)=2\)
\(\dfrac{x}{16}\times2016=2\)
\(\dfrac{x}{16}=\dfrac{2}{2016}\)
\(x=\dfrac{2}{2016}\times16\)
\(x=\dfrac{1}{63}\)