Let the number be x
3x + 5 = 20
3x = 20 - 5
x = 15/3
x=5
Answer:
Domain : all real numbers
Step-by-step explanation:
The domain is the input values
What values can x be?
X can be any real number
Domain : all real numbers
Answer:
always
Step-by-step explanation:
Answer:
x=111
Step-by-step explanation:
the supplementary angle is 16. triangles should add up to 180.
3x+y=17
=> 3x=17-y
Again, x+3y=-1
=> 3y= -1-x
now, 3x+3y= (17-y)+(-1-x)
= 17-y-1-x
= 16-x-y