3-x/7=x/3 решите уравнение

Question

3-x/7=x/3 решите уравнение

Answer 1

3 - x/7 = x/3
x/3 + x/7 = 3
7x/21 + 3x/21 = 3
10x/21 = 3
10x = 21*3 = 63
x = 63/10 = 6,3