Решите уровнение и сделай-те проверку
1)1/4х+1/х=5/16
2)1/х-1/9х=2/9
3)1/8х+1/х=3/8
4)1/х-1/5х=2/15
/ Это дробная черта)

1)1/3х + 1/5х + 1/6х = 21/401*10/3*10х + 1*6/5*6х + 1*5/6*5х = 21/4010/30х + 6/30х + 5/30х = 21/4021/30х = 21/40х = 21/40 : 21/30х = 21/40 * 30/21х = 21*30/40*21х = 30/40х = 3/4проверка:1/3 * 3/4 + 1/5 * 3/4 + 1/6 * 3/4 = 21/403/12 + 3/20 + 3/24 = 21/403*10/12*10 + 3*6/20*6 + 3*5/24*5 = 21/4030/120 + 18/120 + 15/120 = 21/4063/120 = 21/4021/40 = 21/402)1/4х + 1/6х + 1/8х = 39/561*6/4*6х + 1*4/6*4х + 1*3/8*3х = 39/566/24х + 4/24х + 3/24х = 39/5613/24х = 39/56х = 39/56 : 13/24х = 39/56 * 24/13х = 39*24/56*13х = 3*24/56х = 72/56х = 72:2/56:2х = 36/28х = 36:4/28:4х = 9/7 или 1 2/7проверка:1/4 * 9/7 + 1/6 * 9/7 + 1/8 * 9/7 = 39/569/28 + 9/42 + 9/56 = 39/569*6/28*6 + 9*4/42*4 + 9*3/56*3 = 39/5654/168 + 36/168 + 27/168 = 39/56117/168 = 39/5639/56 = 39/56