решить уравнение - 9х=36, 0,6х=-2,4 . -1,8х=-5,4 . 1\7х=-5\14. -5\6х=-1\7. -2 5\...

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решить уравнение - 9х=36, 0,6х=-2,4 . -1,8х=-5,4 . 1\7х=-5\14. -5\6х=-1\7. -2 5\6х=17\16 Выполнить по действиям (-28,6 :57,2-26,8 :(-1,34)*(-3,1)

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prettypushkova

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- 9х = 36 0,6х = - 2,4 - 1,8х = - 5,4
х = 36 : (-9) х = - 2,4 : 0,6 х = - 5,4 : (-1,8)
х = - 4 х = - 4 х = 3

1/7х = - 5/14 - 5/6х = - 1/7 - 2 5/6х = 17/16
х = - 5/14 : 1/7 х = - 1/7 : (-5/6) - 17/6х = 17/16
х = - 5/14 * 7/1 х = - 1/7 * (-6/5) х = 17/16 : (-17/6)
х = - 5/2 х = 6/35 х = 17/16 * (-6/17)
х = - 2 1/2 х = - 3/8

(- 28,6 : 57,2 - 26,8 : (-1,34)) * (-3,1) = 63,55
1) - 28,6 : 57,2 = - 0,5
2) 26,8 : (-1,34) = - 20
3) - 0,5 - 20 = - 20,5
4) - 20,5 * (-3,1) = 63,55

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