2a^2+2ab/3ab+3b^2=2a/( )
问题描述:
2a^2+2ab/3ab+3b^2=2a/( )
答
3b 只要A+B不为0 ,同约掉A+B
答
2a^2+2ab/3ab+3b^2=2a/(3b )
答
左边=2a(a+b)/3b(a+b)
=2a/(3b)
答
2a^2+2ab/3ab+3b^2=2a/( 3b)