SOLUTION: Four time Bett's age plus Emle's age is 72. Five times Errie's age minus Bett's age is 45. How old is Bett and how old is Errie?

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Question 1064695: Four time Bett's age plus Emle's age is 72. Five times Errie's age minus Bett's age is 45. How old is Bett and how old is Errie?
Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
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4B +  E = 72,   (1)
-B + 5E = 45.   (2)


To solve it, express B = 5E - 45 from (2) and then substitute it into equation (1). You will get

4*(5E-45) + E = 72.

Simplify and solve for E.

Then find  B = 5E - 45.