Question

what is the value of x if 3x +11=21-2x​

Answer 1

Step-by-step explanation:

This is a question from linear equation in one variable.

Let's get into it!

The given equation is

3x+11=21-2x

Lets take (-2x) to the L.H.S. and take 11 to the R.H.S.

So, the new equation is

3x+2x=21-11

Lets operate this equation

5x=10

$x=\frac{10}{5}\\ \\x=2$

Therefore the value of x is 2.

Answer 2

Answer:

x = 2

Step-by-step explanation:

3x + 11 = 21 - 2x

Shift the terms

=> 3x + 2x = 21 - 11

Calculate

=> 5x = 10

Divide both the sides by 5

=> $\dfrac{5x}{5} = \dfrac{10}{5}$

Divide

=> x = 2

∴ The value of x is 2

Remember the following points while solving equations :-

→ While shifting the terms from LHS to RHS or from RHS to LHS

+ changes to -

- changes to +

× changes to ÷

÷ changes to ×