分析:(1)依據(jù)等式的性質(zhì),方程兩邊同時(shí)除以34求解;
(2)依據(jù)等式的性質(zhì),方程兩邊同時(shí)除以186求解;
(3)依據(jù)等式的性質(zhì),方程兩邊同時(shí)減723求解;
(4)依據(jù)等式的性質(zhì),方程兩邊同時(shí)乘x,再同時(shí)除以15求解;
(5)依據(jù)等式的性質(zhì),方程兩邊同時(shí)乘28即可求解;
(6)依據(jù)等式的性質(zhì),方程兩邊同時(shí)加x,再同時(shí)減3465求解.
解答:解:①x×34=2924,
x×34÷34=2924÷34,
x=86;
②186×x=2604,
186×x÷186=2604÷186,
x=14;
③x+723=1280,
x+723-723=1280-723,
x=557;
④8670÷x=15,
8670÷x×x=15×x,
8670÷15=15x÷15,
x=578;
⑤x÷28=147,
x÷28×28=147×28,
x=4116;
⑥7083-x=3465,
7083-x+x=3465+x,
7083-3465=3465+x-3465,
x=3618.
點(diǎn)評(píng):本題考查知識(shí)點(diǎn):依據(jù)等式的性質(zhì)解方程,解方程時(shí)注意對(duì)齊等號(hào).