Question 939628
In a parallelogram, the sum of the consecutive angles is 180 degrees
Therefore, {{{4*x+x+30=180}}}
5*x+30 =180
5*x = 180-30
 x=150/5 = 30

Knowing x, we can find the angles first, which are
4*x=4*30=120
and x+30=30+30=60

Since the remaining two angles of the parallelogram are also 120 and 60 , the smallesr angle is 60 degrees.
Don't forget your units

QED