What number can you add to, and subtract from, 129 such that the sum is twice the difference?
(Source: Mathematics Teaching in the Middle School, Jan-Mar 1995)
Double Trouble
Find a number that fits this description.
Find a number that fits this description.
What number can you add to, and subtract from, 129 such that the sum is twice the difference?
(Source: Mathematics Teaching in the Middle School, Jan-Mar 1995)