Odpowiedź:
4/5 = (4 +x)/(5 + 3)
4/5 =(4 + x)/8
4 * 8 = 5(4 + x)
32 = 20 + 5x
5x = 32 - 20 = 12
x = 12/5 = 2 2/5 = 2,4
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Odpowiedź:
4/5 = (4 +x)/(5 + 3)
4/5 =(4 + x)/8
4 * 8 = 5(4 + x)
32 = 20 + 5x
5x = 32 - 20 = 12
x = 12/5 = 2 2/5 = 2,4