Eaqu de la suósi porque etas luncio
<span>22.5+7 (n-3.4)=19.8n
We simplify the equation to the form, which is simple to understand
<span>22.5+7(n-3.4)=19.8n
Reorder the terms in parentheses
<span>22.5+(+7n-23.8)=19.8n
Remove unnecessary parentheses
<span>+22.5+7n-23.8=+19.8n
We move all terms containing n to the left and all other terms to the right.
<span>+7n-19.8n=-22.5+23.8
We simplify left and right side of the equation.
<span><span>-12.8n=+1.3
</span>We divide both sides of the equation by -12.8 to get n.
<span>n=-0.1015625</span></span></span></span></span></span></span>
<h3>given:</h3>
lasts= 1 hour 37 minutes
watched= 52 mins
<h3>to find:</h3>
how many minutes left in the movie.
<h3>solution:</h3>
to find the time left just find the difference.




<u>therefore</u><u>,</u><u> </u><u>there's</u><u> </u><u>4</u><u>5</u><u> </u><u>mins</u><u> </u><u>left</u><u> </u><u>in</u><u> </u><u>the</u><u> </u><u>movie</u><u>.</u>
because 4x+20y=-36,so ( 4x+20y)/2=2x+10y=-18
(2x+10y)-(2x+5y)=-18-18
5y=-36
then y=-7.2
because 2x=18-5y
so x=(18-5y)/2=(18-5*(-7.2))/2=27