problems.? like- 3y+5=7 , 9+10d=1, 8a-15=-3, 24-5v=8, -7=6x+1, 12=32-9n, 4t-3=-21, 30-x=24, 20m+m=3, 7w+4-3w=15, -7-4u-u=1, 3y+22-15y=0, x+8x+2x=6-50, 48=-11t+18+2t