5(r+9) - 2(1-r)
5r+45-2+2r
7r+43 is the answer
5r+45-2-2r=0
3r+43=0
3r=-43
r=-43/3=-14 1/3
ya it is correct Anonymou but question asked is just 5(r+9) - 2(1-r) there is no =0 if it is there we should solve
ofcourse your answer is correct good
+238 
