Answer:
Refer below
Step-by-step explanation:
5) 9x+2 = 119 (alternate angles of a parallel line)
Hence 9x = 117: x=29 degrees.
6) 12x-8 and 108 are supplementary
Hence 12x+100 = 180 Or 12x= 80 :
x = 20/3
7) 5x+7 = 8x -71
(since vertically opposite angles equal and corresponding angles equal)
3x= 78 or x = 26
8) 7x-61 = 4x-7:3x= 54 orx = 18
9) 9x+25 = 13x-19
4x = 44: x=11: 17y+5 = 13(11)-19
y -7
10) 9x-36 =180 : x = 24: 8y+17 = 6(24)-7
8y =120: y =15
11) 7x-23 =49+3x(exterior angle of triangle)
Or 4x = 72: x=18 : 3x =11y-1
y =5
12) 5x-38 = 3x-4
2x = 34 or x =17
7y-20 = 5(17)-38
= 47
y = 67/7
