问题 解答题

解方程.

X-12.75=22.25

X+0.89=29.62.

答案

(1)X-12.75=22.25,

X-12.75+12.75=22.25+12.75,

X=35;

(2)X+0.89=29.62,

X+0.89-0.89=29.62-0.89,

X=28.73.

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