The sum of 2 numbers is 21 the second number is six times the first

Step-by-step 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:

We can now substitute the value of b (6a) into the first equation.

Combine like terms:

Divide both sides by 7:

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 .

So our numbers are 3 and 18.

Hope this helped!

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.