# Math

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Ruby is 10 years older than Sam. The sum of their ages is 52. How old is Sam?

• Math -

s = Sam's age

s + s + 10 = 52

2s = 42

s - 21

• Math -

s=sams age
s+s+10=52
2s=-10+52
2s=42
s=42/2
S=21

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