12 - ( 4х - 18 ) = ( 36 + 4х ) + ( 18 - 6х )
12-(4х-18) = (36+4х) + (18 - 6х) 12 - 4х + 18 = 36х+4х + 18 - 6х 12+18-18 = 36х +4х - 6х + 4х 38х = 12 х= 6/19
12-(4х-18)=(36+4х)+(18-6х) 12-4х+18=36+4х+18-6х 30-4х=54-2х -4х+2х=54-30 -2х=24 х=-12