Respuesta :
Formula should be 3x + 5 = 1/2x
Soultion:
3x - 1/2x = -5
2 1/2x = -5 or 5/2x = -5
mutiply 2 to simplify
2(5/2x) = -5 (2)
5x = -10
divide 5 to find the value of x
5x/5 = -10/5
x = -2
Soultion:
3x - 1/2x = -5
2 1/2x = -5 or 5/2x = -5
mutiply 2 to simplify
2(5/2x) = -5 (2)
5x = -10
divide 5 to find the value of x
5x/5 = -10/5
x = -2
Answer: B. -2
Step-by-step explanation:
The given statement : Five more than a number tripled is half the number.
Let the number be x.
Then according to the given statement ,we have the following equation :-
[tex]3x+5=\dfrac{1}{2}x[/tex]
Multiply 2 on both sides , we get
[tex]2(3x+5)=x\\\\\Rightarrow\ 6x+10=x\\\\\Rightarrow\ 6x-x=-10\\\\\Rightarrow\ 5x=-10\\\\\Rightarrow\ x=\dfrac{-10}{5}=-2[/tex]
Hence, the number is -2.