m取何值时,2m-0.5(6m-8)的值等于m

问题描述:

m取何值时,2m-0.5(6m-8)的值等于m

2m-0.5(6m-8)=m 2m-3m+4=m -m+4=m 2m=4 m=2 答:当m=2时,2m-0.5(6m-8)的值等于m