Question

Решите уравнения : 1)2-1,75х=1,25х-0,5

2)5*(х+1,2)=12,5х

Answer 1

1) 2-1.75x=1.25x-0.5

-1.75x-1.25x=-0.5-2

-3x=-2.5

x=2.5 :3

x=25/30

x=5/6

 

2) 5*(x+1.2)=12.5x

5x+6=12.5x

12.5x-5x=6

7.5x=6

x=6:7.5

x=0.8