Question

two straight lines cross at opposite angles of (7x+4) and (9x-32) calculate the size of all four angles

Answer 1

$oppsite \: ngles \: are \: congrnt \\ (7x + 4) \ = (9x - 32) \\ 32 + 4 = 9x - 7x \\ 36 = 2x \\ 36 \div 2 \\ 18 \\ ans.18cm$
I hope is a correct answer

Answer 2

(7x+4)=(9x-32) (vertically opposite angles)
7x-9x=-32-4
-2x=-36
x=36/2
x=18