简便计算4*0.8*2.5*12.5 0.65*14+87*65%-13/20 解放程X-3/4x=二又5/8
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简便计算4*0.8*2.5*12.5 0.65*14+87*65%-13/20 解放程X-3/4x=二又5/8
![简便计算4*0.8*2.5*12.5 0.65*14+87*65%-13/20 解放程X-3/4x=二又5/8](/uploads/image/z/6716139-51-9.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%974%2A0.8%2A2.5%2A12.5+0.65%2A14%2B87%2A65%25-13%2F20+%E8%A7%A3%E6%94%BE%E7%A8%8BX-3%2F4x%3D%E4%BA%8C%E5%8F%885%2F8)
1.4*0.8*2.5*12.5
=(4*2.5)*(0.8*12.5)
=10*10
=100
2.0.65*14+87*65%-13/20
=0.65*14+0.65*87-0.65
=0.65*(14+87-1)
=0.65*100
=65
3.x-3/4x=二又5/8
1/4x=21/8
x=21/2=10.5
=(4*2.5)*(0.8*12.5)
=10*10
=100
2.0.65*14+87*65%-13/20
=0.65*14+0.65*87-0.65
=0.65*(14+87-1)
=0.65*100
=65
3.x-3/4x=二又5/8
1/4x=21/8
x=21/2=10.5
简便计算4*0.8*2.5*12.5 0.65*14+87*65%-13/20 解放程X-3/4x=二又5/8
5x+20/3=5/3 解放程 5x-4又3/5=25 解方程
解放程:2x%=13/40 , 3/4x-5x%=17.5
解放程2X=13/40 3/4X-5X%=17.5
简便计算.快3又二分之一÷4+360x25%+0.25x36.5=(7.25x40%+2.75x五分之二)÷20%
解放程2x-5/2x-8=x-6/x-4
解放程:5x-8=3(x-1)+1
-1又1/4x-3又5/4简便计算
831×36又5分之4×63.2×831(简便计算) 4分之1x-0.9=2.5×3
解放程并检验3x-5=4x+7
2(x+2.5)=5x解放程
解放程:(1)5x+12=8x-15