1. Seg, 27 de Setembro de 2010 15:11 1) Resolva as equaes abaixo: a) 2x - 6 = - x + 15b) 2(x - 3) - 4x = - 3x - 82x + x = 15 + 62x - 6 - 4x = - 3x - 83x = 212x - 4x + 3x = - 8 + 6x = 21/3x=-2x=7x=-2S = {7}S = {-2}-------------------------------------------------------------------------------------------------------------------------------c) 8x - (x + 3) = 11 8x - x - 3 = 11 8x - x = 11 + 3 7x = 14 x = 14/7 x = 14/7 x = 2 S = [2}d) 100x + 80 = 120x - (40x - 300) 100x + 80 = 120x -40x + 300 100x - 120x + 40x = 300 - 80 140x -120x = 220 20x = 220 x = 220/20 x = 11 S = {11}-------------------------------------------------------------------------------------------------------------------------------. e) 9 - 3(2x - 8) + 2(4 - 5x) = 20 - (5 + 2x) 9 - 6x + 24 + 8 -10x = 20 - 5 - 2xf) 50x + 200 = 20(x - 4) + 100 50x + 200 = 20x - 80 + 100-6x - 10x + 2x = 20 - 5 - 9 - 24 - 850x - 20x = - 80 + 100 -200- 16x + 2x = 20 - 4630x = -280 + 100- 14x = - 26 . (-1)30x = - 180 2. 14x = 26x = -180/30x = 26/14x=-6x = 13/7 S = {13/7}S = {- 6}-------------------------------------------------------------------------------------------------------------------------------g) 14t - 9 - 3t = 2t + 36 14t - 3t - 2t = 36 + 9 14t - 5t = 45h) 6m + 3(10 - 4m) = 25 + 8m 6m + 30 - 12m = 25 + 8m 6m - 12m - 8m = 25 - 309t = 456m - 20m = - 5t = 45/9- 14m = -5t=514m = 5S = {5}m = 5/14 S = {5/14}--.------------------------------------------------------------------------------------------------------------------------------2) Resolva as equaoes abaixo em R.3xx - 10x+1a) - = 284. 8(3x) 2(x - 10) 4(x + 1) - = 161616. 8(3x) -2(x - 10) = 4(x + 1) . 24x - 2x + 20= 4x + 4