Ответы на вопрос:
340/567 + 29/42 + 43/54 + 74/81 - ( 53/60 - 37/84 ) - ( 3/14 + 12/35 ) = 340/567 + 29/42 + 43/54 + 74/81 - (93/210 )- ( 39/70 )= 340/567 +29/42+43/54 + 74/81-93/210 -39/70 = 680+783+ 903+1036/1134 -93/210-39/70 = 3 -93/210-39/70 = 630-93-117 /210= 420/210 = 2
0,9(6х+5)-3.2=5,4х+4,5-3,2=5,4х+1,3 при х=1,2 5,4*1,2+1,3=6,48+1.3=7,78 ==========================
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