Supermarket 44131

The supermarket reduced the price of the mathematics textbook by CZK 32. So now, 4 textbooks are CZK 8 cheaper than 3 textbooks purchased at the original price. Calculate how many CZK crowns one textbook costs before the discount. How many crowns does a textbook cost now?

Correct answer:

x =  120 Kc
y =  88 Kc

Step-by-step explanation:

y=x32 4y=3x8  y=x32 4 y=3 x8  xy=32 3x4y=8  Pivot:Row1Row2 3x4y=8 xy=32  Row231 Row1Row2 3x4y=8 0.33y=29.33  y=0.3333333329.33333333=88 x=38+4y=38+4 88=120=120 Kc  x=120 y=88

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