Answer: -4/7
Step-by-step explanation:
2/3 (1 + n ) = -1/2n
2/3 + 2/3n = -1/2n
Multiply both sides by 6
4 + 4n = -3n
4n + 3n = -4
7n = -4
Divide both sides by 7
n = -4/7
Answer:
Answer above its explained fully
3x+x= 180°(straight angle)
4x= 180°
x= 180/4
x= 45°
See the attached picture:
