几道计算题能简算的要简算和解方程60*20+35*80.1.25*3.6+12.5*0.34+1.254-[3.75*(1.2-3分之1)+4分之3].3+4分之3除以4分之3+3-7*6分之1除以7*6x+x除以2=5分之2一定要有过程
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![几道计算题能简算的要简算和解方程60*20+35*80.1.25*3.6+12.5*0.34+1.254-[3.75*(1.2-3分之1)+4分之3].3+4分之3除以4分之3+3-7*6分之1除以7*6x+x除以2=5分之2一定要有过程](/uploads/image/z/2486548-28-8.jpg?t=%E5%87%A0%E9%81%93%E8%AE%A1%E7%AE%97%E9%A2%98%E8%83%BD%E7%AE%80%E7%AE%97%E7%9A%84%E8%A6%81%E7%AE%80%E7%AE%97%E5%92%8C%E8%A7%A3%E6%96%B9%E7%A8%8B60%2A20%2B35%2A80.1.25%2A3.6%2B12.5%2A0.34%2B1.254-%5B3.75%2A%EF%BC%881.2-3%E5%88%86%E4%B9%8B1%EF%BC%89%2B4%E5%88%86%E4%B9%8B3%5D.3%2B4%E5%88%86%E4%B9%8B3%E9%99%A4%E4%BB%A54%E5%88%86%E4%B9%8B3%2B3-7%2A6%E5%88%86%E4%B9%8B1%E9%99%A4%E4%BB%A57%2A6x%2Bx%E9%99%A4%E4%BB%A52%3D5%E5%88%86%E4%B9%8B2%E4%B8%80%E5%AE%9A%E8%A6%81%E6%9C%89%E8%BF%87%E7%A8%8B)
几道计算题能简算的要简算和解方程60*20+35*80.1.25*3.6+12.5*0.34+1.254-[3.75*(1.2-3分之1)+4分之3].3+4分之3除以4分之3+3-7*6分之1除以7*6x+x除以2=5分之2一定要有过程
几道计算题能简算的要简算和解方程
60*20+35*80.1.25*3.6+12.5*0.34+1.25
4-[3.75*(1.2-3分之1)+4分之3].3+4分之3除以4分之3+3-7*6分之1除以7*6
x+x除以2=5分之2
一定要有过程
几道计算题能简算的要简算和解方程60*20+35*80.1.25*3.6+12.5*0.34+1.254-[3.75*(1.2-3分之1)+4分之3].3+4分之3除以4分之3+3-7*6分之1除以7*6x+x除以2=5分之2一定要有过程
60×20+35×80=20×2×(30+35×2)=40×(30+70)=40×100=4000
1.25×3.6+12.5×0.34+1.25
=1.25×(3.6+3.4+1)
=1.25×8
=10
4-[3.75×(1.2-1/3)+3/4]
=4-[15/4×(6/5-1/3)+3/4]
=4-3/4×[5×(6/5-1/3)+1]
=4-3/4×[5×6/5-5×1/3+1]
=4-3/4×(6-5/3+1)
=4-3/4×(7-5/3)
=4-3/4×7+3/4×5/3
=4-21/4+5/4
=4-(21-5)/4
=4-16/4
=4-4
=0
看不懂题目
x+x/2=2/5
(3/2)x=2/5
x=2/5×2/3
x=4/15
60*20+35*80 = 30*40+70*40 = (30+70)*40 = 100*40 = 4000
1.25*3.6+12.5*0.34+1.25 = 1.25*(3.6+3.4+1)=1.25*8=10
4-[3.75*(1.2-3分之1)+4分之3]=4-[15/4*(1.2-1/3)+3/4]=4-[15*(1.2-1/3)+3]/4=4-(18-5+3)/4=0<...
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60*20+35*80 = 30*40+70*40 = (30+70)*40 = 100*40 = 4000
1.25*3.6+12.5*0.34+1.25 = 1.25*(3.6+3.4+1)=1.25*8=10
4-[3.75*(1.2-3分之1)+4分之3]=4-[15/4*(1.2-1/3)+3/4]=4-[15*(1.2-1/3)+3]/4=4-(18-5+3)/4=0
3+4分之3除以4分之3+3-7*6分之1除以7*6 这个提没读懂
x+x除以2=5分之2 两边乘10 得 10x+5x = 4 得 x = 4/15
收起
60*20+35*80=4000; 1.25*3.6+12.5*0.34+1.25=10; 4-[3.75*(1.2-3分之1)+4分之3]=-1; 3+4分之3除以4分之3+3-7*6分之1除以7*6=5; x+x除以2=5分之2 x=4/15