Question

\(\left(\frac{9}{2}-2\times x\right)\div1\frac{4}{7}=\frac{11}{4}\times\frac{7}{5}\)

Answer 1

(9/2-2xX):11/7=77/20

9/2-2xX=121/20

2xX=-31/20

X=-31/40

k mk nha mk đung đó 

Answer 2

\(\left(\frac{9}{2}-2\times x\right):1\frac{4}{7}=\frac{11}{4}\times\frac{7}{5}\)

\(\left(\frac{9}{2}-2\times x\right):\frac{11}{7}=\frac{77}{20}\)

\(\frac{9}{2}-2\times x=\frac{77}{20}\times\frac{11}{7}\)

\(\frac{9}{2}-2\times x=\frac{121}{20}\)

\(2\times x=\frac{9}{2}-\frac{121}{20}\)

\(2x=\frac{-31}{20}\)

\(x=\frac{-31}{20}:2\)

\(x=\frac{-31}{40}\)

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