SOLUTION: Ana's age is 4 more than Lisa's age. Write an expression, that represents the sum of their ages using L as the variable for Lisa's age.

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Question 847433: Ana's age is 4 more than Lisa's age. Write an expression, that represents the sum of their ages using L as the variable for Lisa's age.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Let
A = Ana's age
L = Lisa's age


"Ana's age is 4 more than Lisa's age"

turns into

Ana's age = (Lisa's Age) + 4

Now replace those phrases with what they defined by (see above) to get

A = L + 4

-------------------------------------------------------

So lisa is L years old and ana is L+4 years old.

Add the two ages

(Ana's age) + (Lisa's age)

(L+4) + (L)

L + 4 + L

(L + L) + 4

2L + 4

is the sum of their two ages