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-1.53*(-4/9)-9.47*(-4/9)-2*4/9
人气:173 ℃ 时间:2020-04-04 20:54:11
解答
-1.53*(-4/9)-9.47*(-4/9)-2*4/9
=(4/9)[(-1.53)(-1)+(-9.47)(-1)-2]
=(4/9)[1.53+9.47-2]
=(4/9)*9
=4
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