ПОМОГИТЕ СРОЧНО!!!ДАЮ 45 БАЛЛОВ!!!
уравнения:
x+2/-2,3 = -5,1/1,7
2(1 1/7 - X) - 3 1/14 = -2 5/7
-1,6/X-2 = -2,8/4,2
4,9/X - 2 = 21/15
x+ 4= 5
найдите значения выражения:
(-5/12 - 13/20)*(-1 13/32)
(-2/3 - 5/6)*(-3 5/9)
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