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x%0.8x=24 怎么写

x-0.8x=24 0.2x=24 x=120

24%x+0.8=2 0.24x=2-0.8 0.24x=1.2 1.2*2/10*x=1.2 x=10/2 x=5 最详尽的解答,最不需要计算器计算的方法,口算就能ok

3(x-0.8)=24 x-0.8=24÷3 x-0.8=8 x=8.8

(1)0.4×(3.2-0.8)÷1.2 =0.4×2.4÷1.2 =0.96÷1.2 =0.8; (2)0.78÷0.26+0.5×0.22 =3+0.11 =3.11; (3)44.28÷0.9÷4.1 =49.2÷4.1 =12; (4)20.88÷0.8-12.9+1.1 =26.1-12.9+1.1 =13.2+1.1 =14.3.

0.4x-0.9×8=24 0.4X=24+0.9*8=31.2 x=31.2/0.4=78

x=12.8-0.8=12 验算: 12+0.8=12.8 等式成立,12是方程 x+0.8=12.8 的根。

0.8x+64-x=24 x-0.8x=64-24 0.2x=40 x=200

=2.4×0.19+2.4×0.81 =2.4×(0.19+0.81) =2.4×1 =2.4

8.9x0.24-0.39x2.4 =8.9x0.24-3.9x0.24 =(8.9-3.9)×0.24 =5×0.24 =1.2

24x=6✘0.8 x=0.2

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