Question

Bài 1 Tìm X

X+X×1/2:2/9+X:2/7=252

Answer 1

x+x*\(\frac{1}{2}\):\(\frac{2}{9}\)+x:\(\frac{2}{7}\)=252

x+x*\(\frac{9}{4}\)+x*\(\frac{7}{2}\)=252

x*(1+\(\frac{9}{4}\)+\(\frac{7}{2}\))=252

x*\(\frac{27}{4}\)=252

x=252:\(\frac{27}{4}\)

x=\(\frac{112}{3}\)

Vậy x=\(\frac{112}{3}\)

Học tốt

Answer 2

\(x+x\times\frac{1}{2}\div\frac{2}{9}+x\div\frac{2}{7}=252\)

\(x\times1+x\times\frac{9}{4}+x\times\frac{7}{2}=252\)

\(x\times\left(1+\frac{9}{4}+\frac{7}{2}\right)=252\)

\(x\times\frac{17}{4}=252\)

\(x=252\div\frac{17}{4}\)

\(x=252\times\frac{4}{17}\)

\(x=\frac{1008}{17}\)

Chắc sai =]]