Question

What is the value of n in the equation 3n + 2(n + 2) = 9n + 12?

Answer 1

Answer with Step-by-step explanation:

3n + 2(n + 2) = 9n + 12

⇒ 3n+2n+4=9n+12

⇒ 5n+4=9n+12

⇒ 9n-5n=4-12

⇒  4n= -8

Dividing both sides by 4

⇒  n= -2

Hence, value of n in the equation 3n + 2(n + 2) = 9n + 12 is:

-2

We have to solve the equation: 3(4x − 2) = 9 + 2x + 5

Step 1: 3(4x − 2) = 9 + 2x + 5

Step 2: 12x − 6 = 14 + 2x

Step 3: 12x − 2x = 14 +6

Step 4: 10x = 20

Step 5: x = 2

Hence, we observe that there was a mistake in Step 2

and Correct step is:

Step 2: 12x − 6 = 14 + 2x

Answer 2

1. -2 I hope that helps a little bit