答案:A
解析:
If N*(5/14)=(5/14)*(7/9), then by the commutative property of multiplication, N*(5/14)=(7/9)*(5/14). Multiplying each side of the latter equation by 14/5 gives N*1=(7/9)*1, so N=7/9.
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答案:A
解析:
If N*(5/14)=(5/14)*(7/9), then by the commutative property of multiplication, N*(5/14)=(7/9)*(5/14). Multiplying each side of the latter equation by 14/5 gives N*1=(7/9)*1, so N=7/9.