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Can you solve this maths problem?

3 green notes and 8 blue notes are worth 46. 8 green notes and 3 blue notes are worth 1. How much are 2 green notes and 3 blue notes worth?
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1 Answer

Two equations 2 unknowns
 
3g+8b=46
8g+3b=1   b=73/11 and g=-26/11
 
so 2g+3b=2(-26/11)+3(73/11)=-52/11 + 219/11=167/11
 
Regards
 
Jim