Решите плиз, уравнения на картинке!
6x -2 =16 6x =16+2 6x =18 x =18/6 x =2 2(x+4) =6 2x +8 =6 2x =6 -8 2x = -2 x = -1 2-(x+3) =x -5 2 -x -3 -x = -5 -2x -3 = -5 -2 -2x = -7 +3 -2x = -4 x =2 3x +10 -2x =17 -x 3x -2x +x =17 -10 2x =7 x =7/2 x =3.5 x/2 +x/5 =7 (5x +2x)/10 =7 7x =7*10 7x =70 x =70/7 x =7
1) 6х-2=16 2)2(х+4)=6 3)3х+10-2х=17-х х/2+х/5=7 ║*10 6х=16+2 2х+8=6 3х-2х+х=17-10 5х+2х=70 х=18:6 2х=-2 2х=7 7х=70 х=3 х=-1 х=3,5 х=10 2-(х+3)=х-5; 2-х-3=х-5; -х-х=-2+3-5| -2X=-4: x=2