Даю 30 баллов ПОМОГИТЕ УМОЛЯЮ!!!Найдите число x,для которого верно равенство: а)х +1/8=3/5 б)4/5-х=1/6 в)х-3/20=1/5(с решением)
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x=24/40-5/40
x=19/40
x = 3/5 - 1/8
x = 3*8/40 - 1*5/40
x = 19/40
б) 4/5 - x = 1/6
4*6/30 - x = 5/30
24/30 - x = 5/30
x = 24/30 - 5/30
x = 19/30
в) х-3/20 = 1/5
x-3/20 = 4/20
x= 4/20 + 3/20
x = 7/20