Answer:
Explanation:
1st diagram is vertically opposte angles.
so,
a)
3x + 5 = 5x-57
3x - 5x = -5 - 57
-2x = -62
2x = 62 (cancle both the - in both sides)
x= 62/2
x=31
2nd diagram(beside to 1st diagram) both the equation lies under linear pairs. so,
b)
4x+ 150 + 2x = 180°
6x + 150 = 180
6x = 180-150
6x = 30
x=30/6
x = 5
then,
(CI. 1-119 ) below that atement,
a)
both are in alternative pairs so,
x+15=102
x=102-15
x=87
b) both are vertically opposte angles.
so,
x+21 = 7x - 3
x - 7x = -21 - 3
-6x = -24
6x = 24
x= 4 (cancle both the - in both sides)
c)
both are in linear pair so,
3x+8 + 2x + 2 = 180°
5x + 10 = 180
5x = 180 - 10
5x = 170
x=170/5
x= 34
pls follow