Question

which of the following
equation has '5' as solution ?​

Answer 1

Option c. 2x - 5 = 5 is correct.

2x - 5 = 5 has '5' as its solution.

Complete question:

Which of the following equations has 5 as the solution?

a. x + 5 = 15

b. 2x - 5 = 10

c. 2x - 5 = 5

d. 2x + 5 = 10

Step-by-step explanation:

a. x + 5 = 15

The given equation is

x + 5 = 15

⇒ x = 15 - 5

• transposing 5 to the right hand side

⇒ x = 10

So, the required solution is x = 10

b. 2x - 5 = 10

The given equation is

2x - 5 = 10

⇒ 2x = 10 + 5

• transposing 5 to the right hand side

⇒ 2x = 15

⇒ x = $\dfrac{15}{2}$

So, the required solution is x = $\dfrac{15}{2}$

c. 2x - 5 = 5

The given equation is

2x - 5 = 5

⇒ 2x = 5 + 5

• transposing 5 to the right hand side

⇒ 2x = 10

⇒ x = 5

So, the required solution is x = 5

d. 2x + 5 = 10

The given equation is

2x + 5 = 10

⇒ 2x = 10 - 5

• transposing 5 to the right hand side

⇒ 2x = 5

⇒ x = $\dfrac{5}{2}$

So, the required solution is x = $\dfrac{5}{2}$