3 years ago

Alvin is 7 years older than Elga. The sum of their ages is 97. What is Elga's age?

Mathematics

1 answer:

LenaWriter [7]3 years ago

4 0

Elga's age = x

Alvin's age = x + 7

x + x + 7 = 97.

Simplify the left side of the equation

2x + 7 = 97.

Subtract 7 from each side

2x = 90.

Divide each side by 2

x = 45

Since x is equal to Elga's age, Elga is 45 years old

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