Question

Tìm x :

       \(\frac{5}{7}+x=\frac{29}{21}\)

         \(\frac{15}{2}-x=\frac{21}{14}\)

Answer 1

\(a,\frac{5}{7}+x=\frac{29}{21}\)

               \(x=\frac{29}{21}-\frac{5}{7}\)

               \(x=\frac{2}{3}\)

\(b,\frac{15}{2}-x=\frac{21}{14}\)

                 \(x=\frac{15}{2}-\frac{21}{14}\)

                 \(x=\frac{6}{1}\Leftrightarrow6\)

Answer 2

a) 5/7 +x= 29/21

=> x= 29/21 - 5/7

=>x= 14/21= 2/3

b) 15/2 -x= 21/14

<=> 15/2 -x= 3/2

=> x= 15/2 -3/2

=>x= 6

Answer 3

5/7+x=29/21   => x=29/21-5/7=2/3

15/2-x=21/14=3/2   => x=15/2-3/2=12/x=6

Answer 4

 a, \(\frac{5}{7}+x=\frac{29}{21}\)

                \(x=\frac{29}{21}-\frac{5}{7}\) 

               \(x=\frac{2}{3}\)

b,\(\frac{15}{2}-x=\frac{21}{14}\)

               \(x=\frac{15}{2}-\frac{21}{14}\)   

               \(x=6\)

       ~~~ Hello ~~~

Answer 5

\(x=\frac{2}{3}\)

\(x=6\)

~~~ Chúc bạn học tốt ~~~