Respuesta :

Answer:

Junior is 11 and Grandpa is 59

Step-by-step explanation:

G = 6J - 7               Get G by itself

G + J = 70

   - J    -J

G = -J + 70              Set the two equations equal  to each other

6J - 7 = -J + 70

+J        +J                 Add J to both sides

7J - 7 = 70

    + 7    +7              Add 7 to both sides

7J = 77                    Divide both sdies by 7

J = 11

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