Решите уравнение:(12,5-х):5=(3,6+х):6
(12,5-х)/5=(3,6+х)/6 = 6(12,5-х)=5(3,6+х) = 75-6х=18+5х = 75-6х-18-5х=0, 57-11х=0, х=57/11
(12,5-х)/5=
=(3,6+х)/6 =
= 6(12,5-х)=
=5(3,6+х) =
= 75-6х=18+5х =
= 75-6х-18-5х=0,
57-11х=0,
х=57/11