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\(\frac{4}{5}-\frac{3}{2}.x=\frac{7}{15}\)

\(\frac{3}{2}x=\frac{4}{5}-\frac{7}{15}\)

\(\frac{3}{2}x=\frac{1}{3}\)

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

\(x=\frac{2}{9}\)

\(\frac{2}{3}x-\frac{5}{4}=\frac{7}{6}-\frac{1}{2}x\)

\(\frac{2}{3}x+\frac{1}{2}x=\frac{7}{6}+\frac{5}{4}\)

\(\frac{7}{6}x=\frac{29}{12}\)

\(x=\frac{29}{12}:\frac{7}{6}\)

\(x=\frac{29}{14}\)

\(\left(x:23+45\right).67=8911\)

\(x:23+45=8911:67\)

\(x:23+45=133\)

\(x :23=133-45\)

\(x:23=88\)

\(x=88.23\)

\(x=2024\)

\(bài1:\)

\(\left(x:23+45\right).67=8911\)

\(\left(x:23+45\right)=8911:67\)

\(x:23+45=133\)

\(x:23=133+45\)

\(x:23=178\)

\(x=178.23\)

\(x=4094\)

thiếu đề b1
 

có

a) \(998.34=\left(1000-2\right).34=34000-68=33932\)

có