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\(\frac{4}{3}+x\cdot\frac{2}{3}-\frac{1}{4}=4\frac{5}{12}\)

H24
3 tháng 8 2017 lúc 14:51

\(\frac{4}{3}+x.\frac{2}{3}-\frac{1}{4}=\frac{53}{12}\)

\(x.\frac{2}{3}-\frac{1}{4}=\frac{53}{12}-\frac{4}{3}\)

\(x.\frac{2}{3}-\frac{1}{4}=\frac{37}{12}\)

\(x.\frac{2}{3}=\frac{37}{12}+\frac{1}{4}\)

\(x.\frac{2}{3}=\frac{10}{3}\)

\(x=\frac{10}{3}:\frac{2}{3}\)

\(x=\frac{30}{6}=5\)

Vậy x = 5

mik ko chắc

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HD
3 tháng 8 2017 lúc 14:48

\(\frac{4}{3}+x.\frac{2}{3}-\frac{1}{4}=4\frac{5}{12}\)

\(\frac{4}{3}+x.\frac{2}{3}=4\frac{5}{12}+\frac{1}{4}\)

\(\frac{4}{3}+x.\frac{2}{3}=\frac{53}{12}+\frac{1}{4}\)

\(\frac{4}{3}+x.\frac{2}{3}=\frac{14}{3}\)

\(x.\frac{2}{3}=\frac{14}{3}-\frac{4}{3}\)

\(x.\frac{2}{3}=\frac{10}{3}\)

\(x=\frac{10}{3}:\frac{2}{3}\)

\(x=5\)

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TA
3 tháng 8 2017 lúc 14:58

\(\frac{4}{3}+x\cdot\frac{2}{3}-\frac{1}{4}=4\frac{5}{12}\)

\(\frac{2}{3}\cdot2+x\cdot\frac{2}{3}-\frac{1}{4}=\frac{53}{12}\)

\(\frac{2}{3}\cdot2+x\cdot\frac{2}{3}=\frac{53}{12}+\frac{1}{4}\)

\(\frac{2}{3}\cdot2+x\cdot\frac{2}{3}=\frac{56}{12}\)

\(\frac{2}{3}\cdot\left(x+2\right)=\frac{56}{12}\)

\(x+2=\frac{56}{12}\div\frac{2}{3}\)

\(x+2=7\)

\(x=7-2=5\)

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