My brother is x years old. I am 5 years older than him. Our combined age is 30 years old. How old is

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My brother is x years old. I am 5 years older than him. Our combined age is 30 years old. How old is my brother

Brother's age is x:
I am 5 years older, meaning I'm x + 5:

The combined age is found by adding:
x + (x + 5) = 30

Group like terms:
2x + 5 = 30

To solve for x, type this equation into our search engine and we get:
x = 12.5