Решите уравнени. 14-2у=2 11-6z=2-7z 10n-9=7n+12 -7x-40=3x 12m+9=11m+7

14-2y=2 -2y=2-14 2y=14-2=12 y=12/2=6 11-6z=2-7z 7z-6z=2-11 z=-9 10n-9=7n+12 10n-7n=12+9 3n=21 n=21/3=7 n=7 -7x-40=3x -10x=40 x=40/(-10)=-4 x=-4 12m+9=11m+7 12m-11m=7-9 m=-2