5/7:6/7x+3/7-1/2=1/6 помогите решить

5/7 : 6/7х + 3/7 -1/2 = 1/65/7 : 6/7х= 1/6 - 3/7 +1/25/7 : 6/7х = 7/42 - 18/42 + 21/425/7 : 6/7х=10/426/7х=5/7 : 10/426/7х=5/7 * 42/106/7 х = 6/2х= 6/2 : 6/7х= 6/2 * 7/6х=7/2х=3  1/2