Question

5/7*x+2/5=2/3

Answer 1

5/7 * x + 2/5 = 2/3 

5/7 * x          =  2/3 - 2/5 

5/7 * x          = 4/15

        x          =   4/15 : 5/ 7

        x          = 28 / 75 nha bạn !

Answer 2

\(\frac{5}{7}\)x  X  + \(\frac{2}{5}\)= \(\frac{2}{3}\)

=> \(\frac{5}{7}\)x X = \(\frac{2}{3}\) - \(\frac{2}{5}\)

=> \(\frac{5}{7}\)x X = \(\frac{4}{15}\)

=> X = \(\frac{4}{15}\): \(\frac{5}{7}\)

=> X = \(\frac{28}{75}\)

Answer 3

5/7 * x + 2/5 = 2/3

5/7 * x = 2/3 - 2/5

5/7 * x = 4/15

x = 4/15 : 5/7

x = 28/75