Question

If 5 is added to a number and the sum is doubled, the result is 7 less than the number. What is the number? Write your answer as a number only.

Answer 1

2(n + 5) = n - 7
Distribute the 2.

2n + 10 = n - 7
Subtract n.

n + 10 = -7
Subtract 10.

n = -17
Your answer!