再问四道题(脱式计算) 100×0.83+83×99 4.7×63+3.7×47 3.6x + 2.4 x =0.36 5(x-3.1)=15.5
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![再问四道题(脱式计算) 100×0.83+83×99 4.7×63+3.7×47 3.6x + 2.4 x =0.36 5(x-3.1)=15.5](/uploads/image/z/13900378-58-8.jpg?t=%E5%86%8D%E9%97%AE%E5%9B%9B%E9%81%93%E9%A2%98%EF%BC%88%E8%84%B1%E5%BC%8F%E8%AE%A1%E7%AE%97%EF%BC%89+100%C3%970.83%2B83%C3%9799+4.7%C3%9763%2B3.7%C3%9747+3.6x+%2B+2.4+x+%3D0.36+5%EF%BC%88x-3.1%EF%BC%89%3D15.5)
再问四道题(脱式计算) 100×0.83+83×99 4.7×63+3.7×47 3.6x + 2.4 x =0.36 5(x-3.1)=15.5
再问四道题(脱式计算) 100×0.83+83×99 4.7×63+3.7×47 3.6x + 2.4 x =0.36 5(x-3.1)=15.5
再问四道题(脱式计算) 100×0.83+83×99 4.7×63+3.7×47 3.6x + 2.4 x =0.36 5(x-3.1)=15.5
100×0.83+83×99 =100×83/100+83×(100-1)=8300
4.7×63+3.7×47 =4.7×63+37×4.7=4.7×(63+37)=470
3.6x + 2.4 x =0.36 ,6x=0.36,x=0.06
5(x-3.1)=15.5,5x-15.5=15.5,5x=31,x=6.2
100×0.83+83×99
=83*1+83*99
=83*(1+99)
=83*100
=8300
4.7×63+3.7×47
=4.7*63+4.7*37
=4.7*(63+37)
=4.7*100
=470
3.6x + 2.4 x =0.36
6x=0.36
x=0.06
5(x-3.1)=15.5
x-3.1 =3.1
x=6.2
100×0.83+83×99=1*83+99*83=(1+99)*83=100*83=8300
4.7×63+3.7×47=4.7*63+4.7*37=(63+37)*4.7=100*4.7=470
3.6x + 2.4 x =0.36 (3.6+2.4)*x=0.36 6*x=0.36 x=0.06
5(x-3.1)=15.5 5x-15.5=15.5 5x=31 x=6.2