Question

Three times one number plus a second number is 40, and the one number minus the second number is 4. Find the numbers.

Answer 1

The numbers are 11 and 7

Explanation:

To find these, use the statements to create equations in standard form.

3x + y = 40

x - y = 4

Now that we have these two, we can add them together and get the y's to cancel out.

3x + y = 40

x - y = 4

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4x = 44

x = 11

Now that we have the first number as 11, we can solve for y using either equation.

x - y = 4

11 - y = 4

-y = -7

y = 7