a减b等于6,a除以b等于6,a乘b减(a加b)等于?
问题描述:
a减b等于6,a除以b等于6,a乘b减(a加b)等于?
答
a/b=6,所以a=6b a-b=6b-b=5b=6,所以b=6/5 a=36/5
ab-(a+b)=216/25 - 42/5=6/25