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x%0.52x=3.2×0.15解方程

0.48x=0.48 x=1

x-0.52x=3.2×0.15 0.48x=3.2×0.15 x=3.2×0.15/0.48=0.2×15/3=1

x-0.52x=3.2乘0.15 0.48x=0.48 x=1

x-0.52x=3.2×0.15 0.48x=0.48 x=1

x-0.52=1.3 x=1.3+0.52 x=1.82

0.4x+0.8x×15=52 0.4x+12x=52 12.4x=52 x=52÷12.4 x≈4.194

(1)x+18=52, x+18-18=52-18, x=34,(2)x÷1.2=0.5,x÷1.2×1.2=0.5×1.2, x=0.6,(3)2.5x=1, 2.5x÷2.5=1÷2.5, x= 2 5 , (4)x-4.8=1.6, x-4.8+4.8=1.6+4.8, x=6.4.

原方程可化为 52x=234O, x=45。

13*(2+2X)=52 2+2X=4 2X=2 X=1

X-35%X=0.52 x-0.35x=0.52 0.65x=0.52 x=52/65 x=4/5

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