Question

If 4 is added to twice the number n, the result is the same as if n were increased by 7. What is the value of n?

Answer 1

n = 3

Explanation:

Starting equation:

2n + 4 = n + 7

Subtract by n on both sides:

n + 4 = 7

Subtract 4 on both sides

n = 3

Check to see if the answer works:

2(3) + 4 = 3 + 7

6 + 4 = 3 + 7

10 = 10

The solution works

n = 3