Question

解方程：2x+40%x=7.2和 5乘以（x-3/1）=2

Answer 1

2x+40%x=7.2

2.4x=7.2

x=7.2/2.4

x=3

5乘以（x-3/1）=2

x-3/1=5/2

x=5/2+3/1

x=15/11