2.Решите уравнение.

(6.97Х-13,2Х)*(- 1 11/89)=-5 2/9 - 3 1/3

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(6.97Х-13,2Х)*(- 1 11/89)=-5 2/9 - 3 1/3

-6,23х*(-100/89)=-47/9-30/9

623х/89=-77/9

9*623х=-77*89

5607х=-6853

х=-6853/5607=-1 1246/5607

(6,97х-13,2х)*(-1 11/89)=-5 2/9-3 1/3

(-6,23х)*(-100/89)=-47/9-10/3

(-623х/100)*(-100/89)=-47-30/9

7х=-77/9

х=-77/9:7

х=-77*1/9*7

х=-11/9