（x-32）×5=115
解 5x-160=115
5x=275
x=55
X-0.4X=16.2
0.6X=16.2
X=27
45×0.8+0.2x=38.2
36+0.2x=38.2
0.2x=2.2
x=11
希望对你有所帮助 还望采纳~~·
解方程: (x-32)×5=115 x-0.4x
（x-32）×5=115
解 5x-160=115
5x=275
x=55
X-0.4X=16.2
0.6X=16.2
X=27
45×0.8+0.2x=38.2
36+0.2x=38.2
0.2x=2.2
x=11
希望对你有所帮助 还望采纳~~·