帮忙通分4b/5b^2c,3c/10a^2b,5b/12ac^2
2个回答
48a^2bc / (60a^2b^2c^2)
18b^2c/ (60a^2b^2c^2)
25ab^3 / (60a^2b^2c^2)
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1.若a+2b+c=0,5a+4b-4c=0,求a2+6b2-10c2/3a2-4b2+5c2的值.
通分b/3a^2c^2,c/-2ab,a/5cb^3
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若a-2b+3c=7,4a+3b-2c=3,则5a+12b-13c=______.
若a-2b+3c=7,4a+3b-2c=3,则5a+12b-13c=______.