Question

dau coroana rezolvati ecuatia [(3+x:2):11+7]*5-13=37

Answer 1

[(3+x:2):11+7]x5-13=37
[(3+x:2):11+7]x5=37+13 ⇒50
[(3+x:2):11+7]=50:5⇒10
(3+x:2):11=10-7⇒3
(3+x:2)=3x11⇒33
x:2=33-3⇒30
x=30x2
x=60