Question

решите уравнение:

(1.2/7x -1/3)*21=2

 

Answer 1

(1.2/7x -1/3)*21=2
1.2/7x -1/3=2/21
9/2x=2/21+1/3
9/2x=2/21+7/21
9/21x=9/21
x=9/21*21/9
x=1