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
10÷【3/8-(13/5÷26/5+5/2)】=?要简便运算
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-(13/5÷26/5+5/2)】=10÷【3/8-(13/5×5/26+5/2)】
=10÷【3/8-﹙1/2+5/2)】
=10÷【3/8-3】
=10÷﹙﹣21/8﹚
=10×﹣8/21﹚
=﹣80/21