How do you simplify the expression #-y+3y-6y+12y#?

2 Answers
Sonnhard
Jun 15, 2018

#8y#

Explanation:

Writing
#-7y+15y=8y#

sf
Jun 15, 2018

#8y#

Explanation:

Think of it as the #y#'s being apples.

Starting with #-1# apples, now add #3# apples and you will have #-1+3=2# apples. Take away #6# from that and you'll have #2-6=-4#. Finally add #12# and you got yourself #-4+12=8# apples!

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