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-147x(0.125)+253x1/8+72x(-1/4)

题目详情
-147x(0.125)+253x1/8+72x(-1/4)
▼优质解答
答案和解析
=-147×0.125+253×0.125-72×2×0.125
=-147×0.125+253×0.125-144×0.125
=(-147+253-144)×0.125
=-38×0.125
=-4.75
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