[tex]\huge\underline\bold\blue{ƛƝƧƜЄƦ}[/tex]
Three angles are given to us and we all know that the sum of four sides of quadrilateral is 360⁰
so
133⁰ + 147⁰ + 47⁰ + x = 360⁰
x = 380⁰ - 367⁰
x = 13⁰
Hope it helps u
