Question

dau coroană
2X+1=5
cât e x
5X-1=9

Answer 1

2x+1=5 <=> 2x=5-1 <=> 2x=4 <=> x=4:2 <=> x=2
5x-1=9 <=> 5x=9+1 <=> 5x=10 <=> x=10:5 <=> x=2
Sper ca te-am ajutat !

Answer 2

2 x + 1 = 5 
2 x = 5 - 1
2 x = 4 
x = 4 : 2 
x = 2

Verific:   2 x 2 + 1 = 4 + 1 = 5 

5 x - 1 = 9 
5 x = 9 + 1 
5 x = 10 
x = 10 : 5 
x = 2 

Verific:   5 x 2 - 1 = 10 - 1 = 9