What is #20 - 16 -: 8 + 7#?

1 Answer
Tony B
Apr 16, 2016

25

Explanation:

Multiply or divide is of greater order of operation that add or subtract. So we do the divide first.

Write as #" "20-16/8+7# we have now applied the process without actually working that stage out. Now we work it out:

#16/8 or 16-:8 = 2# giving

#20-2+7#

Due to discussion and the possibility of some readers not being aware of certain mathematical conventions the comment I put at this point has been removed.

#20-2+7=25#

Related questions
Impact of this question
661 views around the world
You can reuse this answer
Creative Commons License