Question

Enter the value of n so the expression (-y + 5.3) + (7.2y-9) is equivalent to 6.2y + n.

Please explain what and how you did it. I've seen other answers for the same question, but they do not make sense.

Answer 1

If you would like to find the value of n, you can calculate this using the following steps:

(- y + 5.3) + (7.2 * y - 9) = - y + 5.3 + 7.2 * y - 9 = - y + 7.2 * y + 5.3 - 9 = 6.2 * y - 3.7

6.2 * y - 3.7 = 6.2 * y + n
n = - 3.7

The correct result would be - 3.7.