Question

4x+1/2=5,x apartine Q
9/2x+2=1/2,x apartine Q
4(3x+1)=0,x apartine Q
Rezolvati ecuatiile:
3x=12,x apartine Z
-3x=1,x apartine Q
X+2=1,x apartine N
X-4=1/2,x apartine Q
4/3x=5,x apartine Q
5/6y=1,y apartine Q
-1=2/3t , t apartine Q
-4/7y=8,y apartine Z
2/3x+1=5/3,x apartineQ

Answer 1

1) 4x+0,5=5⇔4x=5-0,5⇔4x=4,5⇔x=1,125   
2) 4,5x+2=0,5⇔4,5x=-1,5⇔x=-1/3
3) 3x+1=0⇔3x=-1⇔x=-1/3     
4) x=12/3 ⇔x=4  
5) x=-1/3  
6) x=1-2⇔x=-1 
7) x=0,5+4⇔x=4,5  
8) (4/3)·x=5 |·3⇔4x=15⇔x=15/4  
9) (5/6)·y=1 |·6⇔5y=6⇔y=6/5  
10) -1=(2/3)·t |·3⇔-3=2t⇔t=-3/2  
11) -(4/7)·y=8 |·7⇔-4y=56⇔y=-14  
12) (2/3)·x+3/3=5/3 |·3⇔2x+3=5⇔2x=2⇔x=1