2a^2+2ab/3ab+3b^2=2a/( )

问题描述:

2a^2+2ab/3ab+3b^2=2a/( )

3b 只要A+B不为0 ,同约掉A+B

2a^2+2ab/3ab+3b^2=2a/(3b )

左边=2a(a+b)/3b(a+b)
=2a/(3b)

2a^2+2ab/3ab+3b^2=2a/( 3b)