Question

[nguyễn thùy linh]

tìm x

7/4 trừ x nhân 3/4 = 5/19

x nhân 1/2 +3/2 nhân x = 4/5

Answer 1

[Lê Quang Phúc]

\(\frac{7}{4}-x.\frac{3}{4}=\frac{5}{19}\)

\(\Rightarrow1+\frac{3}{4}-x.\frac{3}{4}=\frac{5}{9}\)

\(\Rightarrow\frac{3}{4}.\left(1-x\right)=\frac{5}{9}-1=-\frac{4}{9}\)

\(\Rightarrow1-x=-\frac{4}{9}:\frac{3}{4}=-\frac{16}{27}\)

\(\Rightarrow x=1-\left(-\frac{16}{27}\right)=1+\frac{16}{27}=1\frac{16}{27}\)

Answer 2

[nguyễn thùy linh]

thank you