问题 解答题
4.5x+5.1=6.2x.7.3(x+2.2)=27.01.
答案

(1)4.5x+5.1=6.2x,

4.5x+5.1-4.5x=6.2x-4.5x,

5.1=1.7x,

5.1÷1.7=1.7x÷1.7,

x=3;

(2)7.3(x+2.2)=27.01,

7.3(x+2.2)÷7.3=27.01÷7.3,

x+2.2=3

511
730

x+2.2-2.2=3

511
730
-2.2,

x=1.5.

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