Question

解方程神马的.好讨厌.X+30%x=130 20%x=3/5+1/45.6x+15.4=29.4 59.7-20.6x=

Answer 1

答案分别是：100 4.25

2.5 1

X+30%x=130

X+0.3x=130

X=130

20%x=3/5+1/4

0.2X=0.6+0.25

0.2X=0.85

X=4.25

5.6x+15.4=29.4

5.6x=29.4-15.4

5.6x=14

x=2.5

59.7-20.6x=39.1

20.6x=59.7-39.1

20.6x=20.6

x=1