简便运算 (17/12+5/1)—(20%+17/5)(12/17+1/5)-(20%+5/17)打错了。sorry!

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简便运算 (17/12+5/1)—(20%+17/5)(12/17+1/5)-(20%+5/17)打错了。sorry!
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简便运算 (17/12+5/1)—(20%+17/5)(12/17+1/5)-(20%+5/17)打错了。sorry!
简便运算 (17/12+5/1)—(20%+17/5)
(12/17+1/5)-(20%+5/17)打错了。sorry!

简便运算 (17/12+5/1)—(20%+17/5)(12/17+1/5)-(20%+5/17)打错了。sorry!
(17/12+5/1)—(20%+17/5)格式不对应该是
(12/17+1/5)-(20%+5/17)
=12/17+1/5-1/5-5/17
=12/17-5/17
=7/17

你的题没有写好,错了吧?

(12/17/+1/5) - (20%+5/17)
=(12/17+1/5) - (1/5+5/17)
=12/17+1/5 - 1/5-5/17
=12/17-5/17
=7/17

(12/17+1/5)-(20%+5/17
=12/17+1/5-1/5+5/17
=17/17
=1