Notebooks 7347

A notebook costs from euros, a pencil c euros and a ruler costs as much as a notebook and a pencil together. How much do you pay for three notebooks, seven pencils, and two rulers?


x = (Correct answer is: 5z + 9c) Wrong answer

Step-by-step explanation:

x=3z+7c+2(z+c) x=5z+9c

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