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(12.5%1.25)乘0.8(简便计算)

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1. 3/7 × 49/9 - 4/3 2. 8/9 × 15/36 + 1/27 3. 12× 5/6 – 2/9 ×3 4. 8× 5/4 + 1/4 5. 6÷ 3/8 – 3/8 ÷6 6. 4/7 × 5/9 + 3/7 × 5/9 7. 5/2 -( 3/2 + 4/5 ) 8. 7/8 + ( 1/8 + 1/9 ) 9. 9 × 5/6 + 5/6 10. 3/4 × 8/9 - 1/3 11. 7 × 5/49 + 3/14...

设备折旧按5年计算,每年按12个月,每月22天,每天8...10秒到100秒不等,故折弯每刀设备折旧=0.13-1.3...我们需要压至少3个月左右的资金,按银行利息为1.25-...

八分之一=0.125=12.5%=1.25折=1.25成 折和成是一样的。

1)1.25*17.6+36.1/0.8+2.36*12.5 1.25*17.6+36.1/0.8+2.36*12.5 =(5/4)*17.6+36.1*(5/4)+23.6*(50/4) =176/8+361/8+236/8 =773/8=96.625 (2)7.5*2.3+1.9*2.5 7.5*2.3+1.9*2.5 =7.5*(1.9+0.4)+1.9*2.5 =(7.5+2.5)*1.9+7.5*0.4 =19+3 =22 (3)...

27/73×120%-27/73×20% =27/73×(120%-20%) =27/73×1 =27/73 80×(1.25+12.5%) =80×1.25+80×12.5% =100+10 =110 30%×9+3/5×1又三分之二 =2.7+1 =3.7 不懂可追问,有帮助请采纳,谢谢!

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