Question

Antonio is seven less than four times his daughter's age. Antonio is 45; how old is his daughter?
Answer

17

15

13

19

Answer 1

(45+7)/4=13
13(4)=52
52-7=45

Answer 2

let x be the age of her daughter
let 4x-7 be the age of Antonio
equation:
4x-7=45
4x=45+7
4x=52
4x/4=52/4
x = 13
checking:
4x-7 = 45
4(13) - 7 = 45
52-7 = 45
45=45