How old was Lisa x years ago if she is now 13? Which expression represents this?

Question

asked Sep 17, 2020 12.1k views

2 Answers

Yen NQ · Answer 1 · 2020-09-17T07:12:53+0000

Answer:

a = 13 - x

Explanation:

Age = a

(Any other letter of substitution for age would be fine)

For example if x was 5 :

a = 13 - 5

a = 8

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