这题简便计算,怎么写?17×23-23×7 = = = 记得先乘后减这题简便计算,怎么写?17×23-23×7== =记得先乘后减
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这题简便计算,怎么写?17×23-23×7 = = = 记得先乘后减这题简便计算,怎么写?17×23-23×7== =记得先乘后减
这题简便计算,怎么写?17×23-23×7 = = = 记得先乘后减
这题简便计算,怎么写?
17×23-23×7
=
=
=
记得先乘后减
这题简便计算,怎么写?17×23-23×7 = = = 记得先乘后减这题简便计算,怎么写?17×23-23×7== =记得先乘后减
=23x(17-7)
=23x10
=230
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吐
=23x(17-7)
=23x10
=230