(1/3√27-√24+3√2/3)乘以√18=多少?

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(1/3√27-√24+3√2/3)乘以√18=多少?
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(1/3√27-√24+3√2/3)乘以√18=多少?
(1/3√27-√24+3√2/3)乘以√18=多少?

(1/3√27-√24+3√2/3)乘以√18=多少?
(1/3√27-√24+3√2/3)x√18
=(√3-2√6+√6)x2√3
=(√3-√6)x2√3
=6-6√2

x/12+(15-x)/24=1 两边乘24
2x+(15-x)=24
2x-x=24-15