Answer:
24
Step-by-step explanation:
=> 5x+2+2x+10 = 180 (Angles on a straight line add up to 180)
=> 7x+12 = 180
=> 7x = 180-12
=> 7x = 168
Dividing both sides by 7
=> x = 24
x= 24
(5x +2)° +(2x +10)°= 180° (adj. ∠s on a str. line)
5x+2 +2x +10= 180
7x +12= 180 (simplify)
7x= 180 -12 (-12 on both sides)
7x= 168
x= 168 ÷7
