Algebra - Find the values of a and b that would make the quadrilateral

Question

a parallelogram.
Top left - 5b+6
Bottom left - 4a-8
Bottom right - 8a-10

Pls help

Answer 1

I assume these are angles
Opposite angles are congruent, and consecutive angles are supplementary, so
5b+6 = 8a-10
4a-8 + 8a-10 = 180
solve these to get
a = 33/2
b = 116/5