Ответы на вопрос:
(8 13/18 - 6 17/110) * 1 3/217= (8 715/990 - 6 153/990) * 1 3/217==2 562/990*220/217=2542/990*220/217=2542/9*2/217=82/9*2/7=164/63=2 38/63
(8 13/18 - 6 17/110) * 1 3/217 = 2 38/63 1) 8 13/18 - 6 17/110 = 8 715/990 - 6 153/990 = 2 562/990 = 2 281/495 2) 2 281/495 * 1 3/217 = 1271/495 * 220/217 = (41*4)/(9*7) = 164/63 = 2 38/63
10x-10+9=3x+9x^2-1-3x 10x-1=9x^2-1 10x-9x^2=0 x(10-9x)=0 x=0; 10-9x=0 x=1,1
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