SOLUTION: debbie's age is 66, which is 12 less than 6 times donalds's age. how old is donald?

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Question 560817: debbie's age is 66, which is 12 less than 6 times donalds's age. how old is donald?
Answer by Maths68(1474) About Me  (Show Source):
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debbie's age is 66, which is 12 less than 6 times donalds's age. how old is donald?
Let
Present age of Donald = d
Given
Debbie's age = 66
Debbie's age = 6d-12
66=6d-12
66+12=6d
78=6d
78/6=6d/6
13=d
d=13
Donald is 13 years old.