Question

In a quad abcd angle a =2x+4 and angle b= y+3 angle c =2y+10 and angke d 4x-5

Answer 1

2y+4+y+3+2y+10+4y-5 = 360 degrees

9y + 17 - 5 = 360

9y = 360- 17 +5

9y = 348

y = 348 / 9

y = 38.67

now in place of the unknown number put 38.67 and u will find the answer

hope it is correct and helps you !