Выражения: 4b+(r-b)*2; (4+12)*a+7*c (6+5+8)*c-9*a 17*b - 4*b+8*c 56*d+(6+7)*d 5*(a+b+c)+2*b (d+c)*5+4*d (d+c)*4- 2*d 62*c - 34*c+6*c

4b+(r-b)*2=4b+2r+2b=6b+2r; (4+12)*a+7*c=4a+12a+7c=16a+7c; (6+5+8)*c-9*a=6c+5c+8c-9a=19c-9a; 17*b-4*b+8*c=17b-4b+8c=13b+8c; 56*d+(6+7)*d=56d+6d+7c=69d; 5*(a+b+c)+2*b=5a+5b+5c+2b=5a+7b+5c; (d+c)*5+4*d=5d+5c+4d=9d+5c; (d+c)*4-2*d=4d+4c-2d=2d+4c; 62*c-34*c+6*c=62c-34c+6c=34c;

4b+(r-b)*2=4b+2r+2b=6b+2r; (4+12)*a+7*c=4a+12a+7c=16a+7c; (6+5+8)*c-9*a=6c+5c+8c-9a=19c-9a; 17*b-4*b+8*c=17b-4b+8c=13b+8c; 56*d+(6+7)*d=56d+6d+7c=69d; 5*(a+b+c)+2*b=5a+5b+5c+2b=5a+7b+5c; (d+c)*5+4*d=5d+5c+4d=9d+5c; (d+c)*4-2*d=4d+4c-2d=2d+4c; 62*c-34*c+6*c=62c-34c+6c=34c;