Answer:
i think its the last one
Step-by-step explanation:
as 15 - 3 is 12 and then the 7
hope this helps
i would appreciate it if u can heart and like my answer and maybe even give it 5 stars or brainliest pls i beg u thx !!! : )
Zero pair is a pair of numbers whose sum is zero, used to illustrate addition and subtraction problems... with positive and negative integers.
e.g. +1 -1
I hope that this helps
:)
500=140+40h
minus 140 both sides
360=40h
divide y 40
9=h
9 hours
