Упрожнение 171 только а)

Question

Упрожнение 171 только а)

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Answer 1

Х:(-(75/49)*91/50*36/13) = -(84/55)*88/63*15/64
х:(-(3*18)/7) = -((21*3)/(63*2))
х:(-(54/7) = -(1/2)
х = 54/14 = 27/7 = 3 6/7