решите уравнение : 6 1/7 -(с+2 4/7)=2 5/7

Question

решите уравнение :

6 1/7 -(с+2 4/7)=2 5/7

Answer 1

6 1\7 - c - 2 4/7 = 2 5/7

c = 6 1/7 - 2 4/7 - 2 5/7

c = 6 1/7 - 4 9/7

c = 43/7 - 37/7

c = 6/7

Answer 2

6 1/7 - c -2 4/7 = 2 5/7
c = -2 5/7+6 1/7-2 4/7
c= 6/7