Question 13354
You factor everything out. As there is a negative (or as some would say - a subtraction sign) in front of (2r+8) you have to multiply everything insided the brackets by -1, which gives us:
<BR>
7r-2r-8=32
<BR>
Then you add the like terms:
<BR>
5r-8=32
<BR>
You add 8 to each side:
<BR>
5r=40
<BR>
And you divide each side by 5:
<BR>
r=8