80%×(1+45%)x-x=50等于几

问题描述:

80%×(1+45%)x-x=50等于几

(0.8*1.45-1)x=50
x=312.5

80%×(1+45%)x-x=50
0.8x+0.36x-x=50
0.16x=50
x=50/0.16=5000/16=312.5