问题 解答题
①8-0.52X=0.27×20②X+0.8X=1.98.
答案

①8-0.52x=0.27×20,

8-0.52x=5.4,

8-0.52x+0.52x=5.4+0.52X,

5.4+0.52x=8,

5.4+0.52x-5.4=8-5.4,

0.52x=2.6,

0.52x÷0.52=2.6÷0.52,

x=5;

②X+0.8X=1.98,

1.8x=1.98,

1.8x÷1.8=1.98÷1.8,

x=1.1.

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