Упростите и решите 3e-1) — (2y-2)+(y-3); 5n-3 (n+2)+(n-6); b (2d-5) -b (d+5); m (k-3) -k (m-5) x+3) — (5x-7).

1) 3y-1-2y+2+y-3=2y-42y=4y=22) 5n-3n-6+n-6=3n-123n=12n=43) 2bd-5b-bd-5b=bd-10bb (d-10)=0b=0 d=104) mk-3m-km+5k=-3m+5k-3m=-5km=5k/3-3·5k/3-5k=00=0 не уверен 5) x+3-5x+74x+10=0-4x=-10x=2,5