Which of the following values of ‘n’ is a solution to the equation 2n - 4 = 4?

-4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D 4
The value of the variable which satisfies the equation, i.e., makes LHS = RHS, is known as the solution to that equation.

For n = 2,
2(2) - 4 = 4
4 - 4 = 4
0 = 4
LHS ≠ RHS

For n = 4,
2(4) - 4 = 4
8 - 4 = 4
4 = 4
LHS = RHS

For n = 3,
2(3) - 4 = 4
6 - 4 = 4
2 = 4
LHS ≠ RHS

For n = -4
2(-4) - 4 = 4
-8 - 4 = 4
-12 = 4
LHS ≠ RHS

So the solution to the equation is n = 4.

Suggest Corrections

Similar questions

n

2 n - 4 = 4

n = 4

n = 5

2 n = 10

sin \frac{π}{2 n} + cos \frac{π}{2 n} = \frac{\sqrt{n}}{2}

n \in Z

4

8

Which of the following is the solution to the equation $\frac{4}{5} n = 20$ ?

n

\frac{2}{3} (4 n - 1) - (2 n - \frac{1 + n}{3}) = \frac{1}{3} n + \frac{4}{3}

Join BYJU'S Learning Program