Решить -7x-t=0 , -x+10=3 , 4x+12=3x+8, 8x-9=-2x+3 , 3x-17=8x+18 , -6x+2(5-3x)=8, 4(=7(2x-5) -7)=5c+(11-7c), (9-+5)=16 буду

-7x = t; x = -t/7
10 - 3 = x = 7
4x - 3x = 8 - 12; x = -4
8x + 2x = 3 + 9; 10x = 12; x = 1,2
-17-18 = 8x-3x; -35 = 5x; x = -7
-6x + 10 - 6x = 8; -12x = -2; x = 1/6
12x-11 = 14x-35; 24 = 2x; x = 12
-4c+7 = 5c+11-7c; -11+7 = -2c+4c; -4 = 2c; c = -2
9-2b-b-5 = 16; -3b = 16-9+5; b = 12/(-3) = -4