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LenaWriter [7]
3 years ago
7

The sum of two numbers is 170, and their difference is 110. Which is the greater of the two numbers?

Mathematics
2 answers:
Sedaia [141]3 years ago
7 0
Hello!

You can make two expressions based on what you know

x + y = 170
x - y = 110

You can add these expressions to eliminate y

2x = 280

Divide both sides by 2

x = 140

You can now put x into one of the original expression

140 + y = 170

Subtract 140 from both sides

y = 30

So the greater number is 140

Hope this helps!
frez [133]3 years ago
6 0
X+y=170
x-y=110
2x=280
x=140 is an answer
y=30
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