Question

x=2 is a solution of the equation 1. 2x+1=5 2. 2x-1=4 3. 3x+1=5​

Answer 1

Question:

x = 2 is the solution of which equation:

1. 2x + 1 = 5
2. 2x - 1 = 4
3. 3x + 1 = 5

Solution:

Here, we have given value of x is 2 and we have to find that of which equation, the given value of x is solution.

To find it, we have to put the value of x in each equation.

Putting value of x in each equation:

Equations 1:✔

2x + 1 = 5 ••••( where x = 2 given )

⇾2×2 + 1 = 5

⇾ 4 + 1 = 5

⇾ 5 = 5

Here,

LHS = RHS, i.e x = 2 is solution of this equation .

Equation 2:✗

2x - 1 = 4 ••••( where x = 2 given )

⇾ 2×2 - 1 = 4

⇾ 4 - 1 = 4

⇾ 3 = 4

Here,

LHS ≠ RHS, i.e x = 2 is not a solution of this equation.

Equation 3:✗

3x + 1 = 5 ••••( where x = 2 given )

⇾3 ×2 + 1 = 5

⇾ 6 + 1 = 5

⇾ 7 = 5

Here,

LHS ≠ RHS, i.e x = 2 isn't a solution of this equation.

Our final required answer:

• $\small{\sf{\green{x = 2 ~is ~a ~solution~ of~ equation~ 1~ i.e ~2x + 1 = 5✔}}}$

Answer 2

Answer:

2x+1=5.

Step-by-step explanation:

becaus if 2x+1=5

then. 2x=5-1

2x=4

then.. x=2