X - the number
3(x+1)=2x+4
3x+3=2x+4
3x-2x=4-3
x=1
Answer:
The answer is C
Step-by-step explanation:
Answer:
all possible input values to the function
Step-by-step explanation:
The domain is the input to the function and the range is the output of the function
Hello from MrBillDoesMath
Answer: 12, 9
Discussion:
Let x be the first number and y the second number. The form the problem statement:
x + y = 21
x - y = 3
Add the two equations. This gives:
(x + x ) + ( y-y) = 21 + 3 =>
2x + 0 = 24 =>
x = 12
Since x -y =3, substituting in the value of x gives, 12 - y = 3 so y = 9
Thank you,
Mr. B
