1) 2x + 17 = 22 + 3х; 3) 25-4х= 12 -5x ; 21 + 45 = 17 + 14x

Question

1) 2x + 17 = 22 + 3х; 3) 25-4х= 12 -5x ; 21 + 45 = 17 + 14x

Answer 1

1). 2х+17=22+3х
3х-2х=22-17 
х=5  
3) 25-4х=12-5х 
-4х+5х=12 -25
Х= -13 

21+45=17+14х 
14х= 17-21-45
14х= -49 
х= -49:14 
Х= -3.5