How do you simplify #2 - 5(3t - 4)#?
the 5 multiplies everything inside the brackets so you have:
But that is not the end of it! You have a minus in front of the bracket.
This is the same as multiplying everything inside the brackets by (-1).
By the way, another way of looking at ' plus ' is as 'put with'; and at subtract as 'remove from':
Now we have :
Just think about the
Negative times negative give you a positive so we have