Question

Tìm x

x : 1/2 + 3/4 = 1 và 19/20

x + x x 1/3 + 5/18 = 1 và 1/6

Cho mình câu trả lời nhanh nhất nhé

Answer 1

a) \(x:\frac{1}{2}+\frac{3}{4}=1\frac{19}{20}\)

   \(x:\frac{1}{2}+\frac{3}{4}=\frac{39}{20}\)

\(x:\frac{1}{2}=\frac{39}{20}-\frac{3}{4}\)

\(x:\frac{1}{2}=\frac{39}{20}-\frac{15}{20}\)

\(x:\frac{1}{2}=\frac{24}{20}\)

\(x=\frac{24}{20}.\frac{1}{2}\)

\(x=\frac{3}{5}\)

Answer 2

\(x:\frac{1}{2}+\frac{3}{4}=1\frac{19}{20}\)

\(x:\frac{1}{2}=1\frac{19}{20}-\frac{3}{4}\)

\(x:\frac{1}{2}=\frac{39}{20}-\frac{3}{4}\)

\(x:\frac{1}{2}=\frac{39}{20}-\frac{15}{20}\)

\(x:\frac{1}{2}=\frac{24}{20}\)

\(x=\frac{24}{20}\times\frac{1}{2}\)

\(x=\frac{24}{40}\)

\(x=\frac{3}{5}\)