问题 解答题

X+2.5=8.8

16.9÷X=0.13

X÷0.84=2.3

X-18.7=9.63.

答案

X+2.5=8.8,

X+2.5-2.5=8.8-2.5,

X=6.3;

16.9÷X=0.13,

X=16.9÷0.13,

X=130;

X÷0.84=2.3,

X=2.3×0.84,

X=1.932;

X-18.7=9.63,

X=9.63+18.7,

X=28.33.

判断题
单项选择题 A1型题