Question

[duy tan]

x + 30% . x= 45 :1.5

Answer 1

[Võ Ngọc Phương]

\(x+30\%.x=45:1,5\)

\(=>x+\dfrac{3}{10}.x=30\)

\(=>x.\left(1+\dfrac{3}{10}\right)=30\)

\(=>x.\left(\dfrac{10}{10}+\dfrac{3}{10}\right)=30\)

\(=>x.\dfrac{13}{10}=30\)

\(=>x=30:\dfrac{13}{10}=30\times\dfrac{10}{13}\)

\(=>x=\dfrac{300}{13}\)

\(#NqHahh\)

Answer 2

[Nguyễn Đức Hùng]

$x+30\%.x=45:1,5$

$=>x+\genfrac{}{}{0ex}{}{3}{10}.x=30$

$=>x.\left(1+\genfrac{}{}{0ex}{}{3}{10}\right)=30$

$=>x.\left(\genfrac{}{}{0ex}{}{10}{10}+\genfrac{}{}{0ex}{}{3}{10}\right)=30$

$=>x.\genfrac{}{}{0ex}{}{13}{10}=30$

$=>x=30:\genfrac{}{}{0ex}{}{13}{10}=30\times \genfrac{}{}{0ex}{}{10}{13}$

$=>x=\genfrac{}{}{0ex}{}{300}{13}$