Answer:
x = 36
Step-by-step explanation:
the 3 angles form a straight angle and sum to 180°
sum the 3 angles and equate to 180
3x + x + x = 180 , that is
5x = 180 ( divide both sides by 5 )
x = 36
Answer:
r=3
Step-by-step explanation:
if n=10
r=n-7
r=(10)-7
r=3
Variables are like a substitute for a number
