Question

m : 3 + m : 9 + m : 27 + m : 81 = 5/9 

Answer 1

haizzz

Answer 2

\(m:3+m:9+m:27+m:81=\frac{5}{9}\)

\(m:\left(3+9+27+81\right)=\frac{5}{9}\)

\(m:120=\frac{5}{9}\)

\(m=\frac{5}{9}\times120\)

\(m=\frac{200}{3}\)

Answer 3

\(m.\frac{1}{3}+m.\frac{1}{9}+m.\frac{1}{27}+m.\frac{1}{81}=\frac{5}{9}\)

\(m\left(\frac{1}{3}+\frac{1}{9}+\frac{1}{27}+\frac{1}{81}\right)=\frac{5}{9}\)

Vì: \(\frac{1}{3}+\frac{1}{9}+\frac{1}{27}+\frac{1}{81}=\frac{27}{81}+\frac{9}{81}+\frac{3}{81}+\frac{1}{81}=\frac{40}{81}\)

nên \(m.\frac{40}{81}=\frac{5}{9}\)

\(m=\frac{5}{9}:\frac{40}{81}=\frac{5}{9}.\frac{81}{40}=\frac{9}{8}\)

Answer 4

m : 3 + m : 9 + m : 27 + m : 81 = 5/9

( 3 + 9 + 27 + 81 ) : m = 5/9

120 : m = 5/9

         m = 120 : 5/9

         m = 216

Answer 5

thanks

Answer 6

M=216

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Answer 7

M=216 nha