Question

Find the value of each expression when n=7 3n - n + 2n =

Answer 1

Step-by-step explanation:

n=7

3n-n+2n

3×7-7+2×7

21-7+14

14+14

28

Answer 2

Given equation is 3n - n + 2n

Here,

We can take n as common = n(3-1+2) = n(4) = 4n

Given that n = 4

∴ 4n = (4 × 4) = 16

$\boxed{\bold{\therefore{3n - n + 2n = 4n=16\:\:\:\:When\:n=4}}}$

Therefore the answer is 16.