Grandpa gump is 63yrs old. His age is 2 years less than 5 times the age of billy Gump. How old is Billy?
1 answer:
5x -2 = 63
<u> +2 = +2 (add 2 to both sides)</u>
<u>5x = 65 (your equation)</u>
5 5 (divide both sides by 5)
x = 13
Billy is 13 years old.
(check: 13 x 5 - 2 = 63
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