A: Find two positive integers whose sum is 28, and whose sum also equals twice their difference. The integer smaller integer is ___ and the larger integer is ___
B: The sum of two integers is -144. The difference of the same numbers is -10. Find the two numbers.
a + b = 28
a + b = 2 (a-b)
a = 28 - b
3 b = a
3 b = 28 - b
4 b = 28
b = 7
then a = 3 b = 21