Question

Решите уравнение -2,8x+4,5=1,9x-13,5

Answer 1

-2.8х-1.9х=-13.5-4.5
-4.7х=-18
x=180/47 (дробь)

Answer 2

-2.8х-1.9х=-13,5-4,5

Answer 3

--4,7х=18

Answer 4

Эмм что?

Answer 5

Х=180/40или 3 39/47

Answer 6

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Answer 7

не верное решила