解方程:要过程:80%(1+50%)x-x=270

问题描述:

解方程:要过程:80%(1+50%)x-x=270

80%(1+50%)x-x=270
(80%+ 80%*50% - 100%) x=270
(80%+40%-100%)x=270
20% x = 270
x=270/0.2
x=1350

80%(1+50%)x-x=270
0.8(1+0.5)x-x=270
0.8*1.5x-x270
1.2x-x=270
0.2x=270
x=270/0.2
x=1350

80%(1+50%)x-x=270
1.2x-x=270
0.2x=270
x=5400

80%(1+50%)x-x=270
0.8(1+0.5)x-x=270
0.8*1.5x-x270
1.2x-x=270
x=270/0.2
x=1350