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(-5)x(+71/3)+(+7)x(-71/3)-(+12)x71/3简便运算
题目详情
(-5)x(+71/3)+(+7)x(-71/3)-(+12)x71/3简便运算
▼优质解答
答案和解析
(-5)x(+71/3)+(+7)x(-71/3)-(+12)x71/3
=(-5)x(71/3)-(7)x(71/3)-(12)x71/3
=71/3 *(-5-7-12)
=71/3 *(-24)
=-71*8
=-568
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(-5)x(+71/3)+(...
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