Answer:
3 and
18
Explanation:
Let the two numbers be A and B
Given the sum of the two numbers is 21.
That’s
A + B = 21
The second number is 6 times the first .
That’s
B = 6A
We now have two equations
Equation 1: A + B = 21
Equation 2: B = 6A
Now substitute 6A for B in equation 1
We have
A + 6A = 21
7A = 21
Divide both sides by 7
A = 21/7
A = 3
Substitute 3 for A in either of the equations to get B.
Using equation 2 , we have
B = 6A
B = 6 x 3
B = 18
The numbers are 3 and 18