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用分配率计算:(1)(-4)×(5/4-3/2)(2)(2/9-1/3-2/27)×27用分配率计算:(1)(-4)×(5/4-3/2)(2)(2/9-1/3-2/27)×27
题目详情
用分配率计算:(1)(-4)×(5/4-3/2) (2)(2/9-1/3-2/27)×27
用分配率计算:
(1)(-4)×(5/4-3/2)
(2)(2/9-1/3-2/27)×27
用分配率计算:
(1)(-4)×(5/4-3/2)
(2)(2/9-1/3-2/27)×27
▼优质解答
答案和解析
(-4)×(5/4-3/2)= (-4)*5/4-(-4)*3/2=-5+6=1
(2/9-1/3-2/27)×27=2/9 * 27 - 1/3 * 27 - 2/27 * 27=6-9-2=-5
(2/9-1/3-2/27)×27=2/9 * 27 - 1/3 * 27 - 2/27 * 27=6-9-2=-5
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