Question

rezolvati ecuatia $x- \frac{x-1}{2} =2 , x apartine R$

Answer 1

amplificam cu 2 
2x-(x-1)=4
2x-x+1=4
x=4-1
x=3

Answer 2

AMPLIFICARE CU 2

2x - ( x - 1) = 4 ⇔ 2x - x +1 = 4 ⇔ x = 4 - 1 ⇔ x = 3, S ={ 3 }