ilość 5------x ilość 4-----12 - x [ 5 * x + 4*(12 - x) ] : 12 = 4,75 5x + 48 - 4x = 4,75 * 12 x + 48 = 57 x = 57 - 48 x = 9 0dp. Zuzanna miała 9 piątek.
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ilość 5------x
ilość 4-----12 - x
[ 5 * x + 4*(12 - x) ] : 12 = 4,75
5x + 48 - 4x = 4,75 * 12
x + 48 = 57
x = 57 - 48
x = 9
0dp. Zuzanna miała 9 piątek.