Question

今晚要!【2010.5.4】1.X－3/5X=3/8 2.2X＋9/2=5要全的!

Answer 1

1. x-3/5x=3/8

(1-3/5)x=3/8

2/5x=3/8

x=3/8÷2/5

x=15/16

2. 2x+9/2=5

2x=5-9/2

x=1/2÷2

x=1/4