Thread: pre-calc numbers problem-urgent help!

The sum of two numbers is twice their difference. The larger number is 7 more than twice the smaller. Find the numbers.

Originally Posted by tmac11522

The sum of two numbers is twice their difference. The larger number is 7 more than twice the smaller. Find the numbers.

Let the numbers be a and b

(eq1)

(eq2)


From this you can solve it simultaneously

Originally Posted by tmac11522

The sum of two numbers is twice their difference. The larger number is 7 more than twice the smaller. Find the numbers.

let x and y be two required numbers. Let x be the larger number in concern.

1) the sum of two numbers is twice their difference



2) the larger number is 7 more than twice the smaller.



you now have two equations and two unknown. Use substitution to solve.


P.S. this is wrong section. If this is a pre-calc problem you should have posted it in pre-calc section.