Question
the sum of a numbers is 15 and their difference is 4. form a pair of simultaneous equations and solve to find the numbers.
Answers
Damon
x+y=15
x-y=4
it does not matter if x bigger or y bigger
add
2x + 0 = 19
x = 8.5
then
8.5 + y = 15
y = 4.5
x-y=4
it does not matter if x bigger or y bigger
add
2x + 0 = 19
x = 8.5
then
8.5 + y = 15
y = 4.5