问题 解答题

9个0.6比x的2倍多2.7,求x?

答案

0.6×9-2x=2.7,

5.4-2x=2.7,

5.4-2x+2x=2.7+2x,

2x+2.7=5.4,

2x+2.7-2.7=5.4-2.7,

2x=2.7,

2x÷2=2.7÷2,

x=1.35.

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