Answer:
.5 years
Step-by-step explanation:
52 weeks = 1 year
26 weeks * 1 year/52 weeks = .5 years
14
7 sheets of paper
$40-$19=$21
$21/$3=7 sheets of paper.
In words:
I did 40 minus 19 to get 21, and the divided 21 by 3 to get 7 sheets of paper.
given that, y=2×7
y=14
and
x+y=5
x+14=5
x=5-14
x=9
x not equal to 5