Lisa is 10 years younger than his brother. use b to represent his brother’s age. how can we show how old david is?

X + 10 = b
hope this helps :)

An equation you could use to find David's age would be B = L + 10 (L standing for Lisa).

This would be helpful in finding David's age, since he is 10 years older than Lisa, meaning if you added 10 years to Lisa's age, you'd get David's age.

I hope this helps!!