б) -5 = 2х; х = -2,5
г) 3 3/4= 2х; х = 3 3/4 : 2; х = 15/4 * 1/2 = 15/8 = 1 7/8
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б) -5 = 2х; х = -2,5
г) 3 3/4= 2х; х = 3 3/4 : 2; х = 15/4 * 1/2 = 15/8 = 1 7/8