Ответы на вопрос:
5[ 5x + 178 ] + 35] : 15 = 70 [ 25x + 890 + 35 = 70 x 15 [2 5x + 890 +35 ] =1050 25x + 890 + 35 = 1050 25x = 1050 -890 - 35 25x = 125 x =125 : 25 =5 x =5
(25x+890+35): 15=70; (25x+925): 15=70; 25x+925=15*70; 25x+925=1050; 25x=1050-925; 25x=125; x=125: 25; x=5.
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