x+y = 3.9
x-y = .9
add them
2x = 4.8
x = 2.4
then y = 3.9-2.4 = 1.5
check:
what is the product?
2.4(1.5) = 3.6
BTW, the last bit of information was not necessary.
The sum of two decimal numbers is 3.9
Their difference is 0.9,and their product is 3.6
What are the two numbers?
6 answers
GIRLS JUST WANNA HAVE FUN.
THAT DID NOT HELP
3.9
5.13
5.13
3 answers