Question

Answer 1

\(=>x\left(\dfrac{8}{9}+\dfrac{4}{9}-\dfrac{7}{9}\right)=\dfrac{11}{10}\)

\(=>x\times\dfrac{5}{9}=\dfrac{11}{10}\)

\(=>x=\dfrac{11}{10}\times\dfrac{9}{5}=\dfrac{99}{50}\)

Answer 2

theo đề ta có \(\dfrac{8x}{9}+\dfrac{4x}{9}-\dfrac{7x}{9}=\dfrac{11}{10}\)

\(\dfrac{8x+4x-7x}{9}=\dfrac{5x}{9}=\dfrac{11}{10}\)

\(\Leftrightarrow50x=99\)

\(\Leftrightarrow x=\dfrac{99}{50}=1,98\)

Answer 3

=> X x(8/9 + 4/9 - 7/9) = 11/10

=> X x 5/9 = 11/10

=>x = 11/10 : 5/9

X= 99/50