а) 4 ( 1 - 0,5х ) + 2 ( 3 + 2х ) = 0
б) 1/2 ( 4 - 7/2х ) - 5/4х + 1/2 = 0
в) 3 ( 5 - х ) + 13 - 4 ( 3х - 8 ) = 0
г) 2,3х + 6,2/0,7 = 1,9х - 9,4/2,1
б) 1/2 ( 4 - 7/2х ) - 5/4х + 1/2 = 0
в) 3 ( 5 - х ) + 13 - 4 ( 3х - 8 ) = 0
г) 2,3х + 6,2/0,7 = 1,9х - 9,4/2,1
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2х=-10
х=-5