Devaughn is 15 years younger than sydney. the sun of their ages is 63. what is sydney’s age?
1 answer:
Answer:
39
Step-by-step explanation:
d = s - 15
d + s = 63
Replace d with s - 15
s - 15 + s = 63
2s -15 = 63
2s = 78
s = 39
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