Question

a x 2/3 + a : 3/7 =9

Ai làm dk tớ tick cho

 

Answer 1

Ta có: a x 2/3 + a x 7/3 = 9

          a x (2/3+7/3) = 9

          a x 3=9

         a=9:3

        a=3 

Answer 2

la sao

Answer 3

Theo đề bài, có: 

\(a.\frac{2}{3}+a:\frac{3}{7}=9\)

\(a.\frac{2}{3}+\frac{a.}{ }\frac{7}{3}=9\)

\(a\left(\frac{2}{3}+\frac{7}{3}\right)=9\)

\(a.3=9\Leftrightarrow a=9:3=3\)

Answer 4

a x 2/3 + a : 3/7 = 9

a x 2/3 + a x 7/3 = 9

a x ( 2/3 + 7/3 ) = 9

a x 9/3 = 9

a x 3 = 9

a = 9 : 3

a = 3

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