如何解不等式50+0.95(x-50)>100+0.9(x-100)?

问题描述:

如何解不等式50+0.95(x-50)>100+0.9(x-100)?

原不等式可化为:
50+0.95x-0.95*50>100+0.9x-90
即0.95x+0.05*50>10+0.9x
0.95x-0.9x>10-2.5
0.05x>7.5
5x>750
解得:x>150