根据题意得:13×x-32=1,
去分母得:x-3=6,
解得:x=9.
故答案为:9
To improve your spoken English, you’d better listen to the tape __________.
A.generally
B.fluently
C.frequently
D.gradually
“用”的绿色化要求抵制物品的过度包装,反对滥用一次性物品,提高物品的使用效率,谨防在提倡“新即好”的流行时尚后面带来的潜在生态损害。()