Explanation:
We can create two equations and solve the system of equations to find both the numbers. Let's represent the numbers as a and b.
We can create two equations:
a+b=21a+b=21
b=6ab=6a
We can now substitute the value of b (6a) into the first equation.
a + (6a) = 21a+(6a)=21
Combine like terms:
7a=217a=21
Divide both sides by 7:
a=3a=3
Now we know the first number is 3. We can plug this value into one of the equations to find b. Let's plug it into b=6ab=6a .
b=6⋅3
b=18
So our numbers are 3 and 18.
Hope this helped!