-3 2/5b- 1 1/20b= -3 1/10+ 1 4/5- 2 7/20 решите

Question

-3 2/5b- 1 1/20b= -3 1/10+ 1 4/5- 2 7/20 решите

Answer 1

Вот на фотографии ответ и решение

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Answer 2

-17/5b - 11/20b = (-3+14)1/10+4/5-2 7/20
-79/20 b= 11 9/10 - 2 7/20
-79/20b = (11-2) 9/10 - 7/20
-79/20 b= 9 11/20
b = 9 11/20 : (-79/20)
b = 191//79
b = 2 33/79