10÷【3/8-(13/5÷26/5+5/2)】=?要简便运算
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10÷【3/8-(13/5÷26/5+5/2)】=?要简便运算
![10÷【3/8-(13/5÷26/5+5/2)】=?要简便运算](/uploads/image/z/2167111-55-1.jpg?t=10%C3%B7%E3%80%903%2F8-%2813%2F5%C3%B726%2F5%2B5%2F2%29%E3%80%91%3D%3F%E8%A6%81%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
10÷【3/8-(13/5÷26/5+5/2)】
=10÷【3/8-(1/2+5/2)】
=10÷(3/8-3)
=10÷(-21/8)
=10×(-8/21)
=-80/21
=10÷【3/8-(1/2+5/2)】
=10÷(3/8-3)
=10÷(-21/8)
=10×(-8/21)
=-80/21