1-6/7x=4/7

1-6/7x = 4/7 -6/7x = 4/7-1 -6/7x = -3/7 |:(-6/7) x = 3/7*7/6 x = 3/6 x = 1/2 x = 0,5

1-6/7x=4/7 -6/7x=4/7-1 -6/7x=-3/7 x= -3/7 * (-7/6) x= 1/2

1-6/7x=4/7 (-6/7x)=(-3/7)/:(-6/7) x=1/2:)