Asked by Louis

So I solved this problem but, strange as it sounds, I don't know how to do the work.
Here's the question: One number is eight less than another number. The sum of the numbers is eighty. Find both numbers.
Here's what I've got:
y-8=x
x+y=80
x=36
y=44
I won't get credit unless I show the "correct" work. Can you help me please?

Answers

Answered by PsyDAG
y - 8 = x

x + y = 80

Substitute y-8 for x in the second equation and solve for y. Insert that value into the first equation to solve for x. Check by putting both values into the second equation.
Answered by Ms. Sue
y-8=x
x+y=80

Substitute

y - 8 + y = 80
2y = 88
y = 44

44 - 8 = x
36 = x

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