Срочно!!!!! 1) 2+ x/5=x+1/2 2)5x+1/7 +5=x
1) 2 + х/5 = х + 1/2 х*(1 -1/5) = 2- 1/2 4/5*х = 1 1/2 х = 1 1/2 : 4/5 = 1 7/8 - ОТВЕТ 2) 5х + 1/7 +5 = х 4х = - 5 - 1/7 = 4 6/7 х = 4 6/7 : 4 = 1 3/14 - ОТВЕТ