(1)s7÷:s3=s4 (2)x10÷x3=x2 (3)(-t)11÷(-t)2=(t)9=-t9 (4)(ab)5÷(ab)=(ab)4=ab4
(1) s7÷s 3 =s4 (2) x10÷x 8 =x2 (3) (-t)11÷(-t)2 =（-t）9 (4)(ab)5÷(ab) =（ab）4 =-t 9 =a4b4
(5)(3)6÷(-3)2=(3)4=34=81 (6)a100÷a100=1 指数相等的同底数(不为0)幂相除, 商为多少?
(5) (-3)6÷(-3)2 =81 (6)a100÷a 100 =1 =(-3)4 =34 指数相等的同底数（不为0）幂相除， 商为多少？ 1