Question 48916
(2N+5)(N~2)=18 OR 2N~3+5N~2=18 OR N=1.5 (TRIAL & ERROR METHOD)

PROOF 2(1.5)~3+5(1.5)~2=18 OR 2(3.375)+5(2.25)=18 OR 6.75+11.25=18 OR 18=18