4+(t-1)×(-2)-3t=-1,如何计算?
问题描述:
4+(t-1)×(-2)-3t=-1,如何计算?
答
4+(t-1)×(-2)-3t=-1
4-2t+2-3t=-1
2t+3t=4+2+1
5t=7
t=7/5