Fifty-crown 2627

A notebook costs CZK m, and a pencil costs the same. The ruler costs CZK n. The brush costs CZK 6. Jirka bought 3 notebooks, 2 pencils, a ruler, and a brush. He paid with a fifty-crown note. How much did he get back?

Correct answer:

x = 50-5m-n-6

Step-by-step explanation:


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