ANSWER TO PART b
in a parallelogram , consecutive angles are supplementary so if i name
x + 24 = a
2x + 6 = b so
angle a + angle b = 180
x + 24 + 2x + 6 = 180
3x + 30 = 180 ..........................1
3x = 180-30
3x = 150
x = 150\3
x = 50
check ; putting values of x in eq i
3x + 30 = 180
3 ( 50) + 30 = 180
150 + 30 = 180 .... 180 = 180
value of x in x + 24 = 50+ 24 = 74
value of x in 2x + 6 = 2 ( 50 ) + 6 =106