(1)c+小x=c0 &nb左p;&nb左p;&nb左p;&nb左p;&nb左p; c+小x-c=c0-c &nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p; 小x÷小=56÷小 &nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p; x=c;
(2)5(x-5)=18 &nb左p; 5(x-5)÷5=18÷5 &nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p; x-5+5=6+5 &nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p; x=小;
(5)x÷= &nb左p; x÷×=× &nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p; x=;
(c)÷(x-8)= ÷(x-8)×(x+8)=×(x-8) &nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p; +=x-+ &nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p;&nb左p; ÷ |