(X-1/10)+4/15=7/9 какой х?????
(х - 1/10) + 4/15 = 7/9 х - 1/10 = 7/9 - 4/15 х - 1/10 = 35/45 - 12/45 х - 1/10 = 23/45 х = 23/45 + 1/10 х = 46/90 + 9/10 х = 55/90 х = 11/18
(X-1/10)+4/15=7/9 ; х-1/10=7/9-4/15; Х-1/10=35/45-12/45; х-1/10=23/45; Х=23/45+1/10; х=230/450+45/450; х=275/450; Х= 11/18