2.75-(-8.5)+(-2.25)+0.25-1.5-275
问题描述:
2.75-(-8.5)+(-2.25)+0.25-1.5-275
答
2.75-(-8.5)+(-2.25)+0.25-1.5-275
=2.75-2.25+0.25-(8.5+1.5)-275
=0.75-10-275
=-284.25