Question

解方程 ! 急需啊~ 谢了! 一步一步的过程~

Answer 1

1.75％X=15.5 0.75x=15.5 x=15.5/0.75=62/3

2.180*40％X=8/5 72x=8/5 x=1/45

3.4X+5％X=3/4 4x+0.05x=0.75 4.05x=0.75 x=75/405=5/27