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agasfer [191]
3 years ago
6

Devaughn is 10 years older than sydney.The sum of their age is 64.What is Sydney age?

Mathematics
1 answer:
Lunna [17]3 years ago
4 0
Hello!

You can make this into two expressions based on what you know

let x stand for Devaughn's age
let y stand for Sydney's age

x = y + 10
x + y = 64

You can put x into the second equatoin

y + 10 + y = 64

Combine like terms

2y + 10 = 64

Subtract both sides by 10

2y = 54

Divide both sides by 2

y = 27

You can put y into the first equation

x = 27 + 10

combine like terms

x = 37

Devaugn is 37 and Sydney is 27

Hope this helps!
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