On two trees sits 17 ravens. If three ravens flew from the first to the second tree and five ravens took off from the second tree, then the first tree has two times more ravens than the second tree. How many ravens were originally on every tree?

Correct answer:

a =  11
b =  6

Step-by-step explanation:

a+b=17 a3=2 (b+35)  a+b=17 a2b=1  Row2Row1Row2 a+b=17 3b=18  b=318=6 a=17b=176=11  a=11 b=6

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