Question

Which expression is equivalent to (0.5n−0.3)−(0.8n−0.9)?

Answer 1

-0.3n + 0.6

Explanation:

We can eliminate the parentheses, obtaining:

0.5n - 0.3 - 0.8n + 0.9

and then combine like terms, obtaining:

-0.3n + 0.6

Answer 2

-0.3n + 0.6

Explanation:

if we write out the entire expression we have:

0.5n - 0.3 - 0.8n + 0.9 (two negative signs create a positive sign)

then we add and subtract

and receive

-0.3n + 0.6