Crown coins

Jana saves two-crown and five-crown coins. She has ten coins in the cashier. How many two crowns and how many five crowns shw have if she saved 29 crowns?

Correct result:

a =  7
b =  3

Solution:


a+b = 10
2a+5b = 29

a+b = 10
2•a+5•b = 29

a+b = 10
2a+5b = 29

a = 7
b = 3

Our linear equations calculator calculates it.



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