Ответы и объяснения

2016-07-26T05:04:16+00:00
(x+2)/2+9*(x+2)+20=0 (x+2)/2+9*(x+2)+20=0 common denominator is 2 2*((x+2)/2+9*(x+2)+20)=2*0 distributing 2 through parentheses (2*(x+2))/2+2*9*(x+2)+2*20=2*0 (2*(x+2))/2+2*9*(x+2)+2*20=2*0 x+2+2*9*(x+2)+2*20=0 x+2+18*(x+2)+2*20=0 x+2+18*(x+2)+40=0 x+18*(x+2)+42=0 distributing 18 through parentheses x+18*x+18*2+42=0 x+18*x+36+42=0 x+18*x+78=0 19*x+78=0 subtract 78 19*x=-78 divide by 19 x=-78/19 x=-78/19 solved for x