Question

\(\frac{3}{4}+\frac{1}{4}:x=\frac{2}{5}\)tớ đang cần gấp ai giúp tớ với tớ tick cho

 

Answer 1

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

\(\Rightarrow\frac{1}{4}:x=\frac{2}{5}-\frac{3}{4}\)

\(\frac{\Rightarrow1}{4}:x=-\frac{7}{20}\)

\(\Rightarrow x=\frac{1}{4}:\frac{-7}{20}\)

\(\Rightarrow x=-\frac{5}{7}\)

Answer 2

\(\frac{1}{4}:x=\frac{2}{5}-\frac{3}{4}\)

\(\frac{1}{4}:x=\frac{-7}{20}\)

\(x=\frac{-28}{20}=\frac{-14}{10}=-1,4\)

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Answer 3

1/4:x=2/5-3/4

1/4:x=-7/20

x=1/4:-7/20

x=-5/7

Answer 4

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

\(=>\frac{1}{4}:x=\frac{2}{5}-\frac{3}{4}\)

\(=>\frac{1}{4}:x=\frac{-7}{20}\)

\(=>x=\frac{1}{4}:\frac{-7}{20}\)

\(=>\frac{-5}{7}\)

Answer 5

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

\(\frac{1}{4}\div x=\frac{2}{5}-\frac{3}{4}\)

\(\frac{1}{4}\div x=\frac{8}{20}-\frac{15}{20}\)

\(\frac{1}{4}\div x=-\frac{7}{20}\)

\(x=\frac{1}{4}\div\frac{-7}{20}\)

\(x=\frac{1}{4}×\frac{20}{-7}\)

\(x=\frac{20}{-28}=-\frac{5}{7}\)

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