Matka ma 35 lat a córka 7 .Za ile lat matka bedzie 3 razy starsza od córki?????
35 + x = 3 * (7 +x)
35 + x = 21 +3x
35 - 21 = 3x - x
2x = 14
x = 7 ------ odowiedź
35 + x = 3 * (7+x)
35 + x = 21 + 3x
x = 7
Matka będzie 3 razy starsza od córki za 7 lat
Sprawdzenie:
35 + 7 = 42
7 + 7 = 14
42/14 = 3
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Pozdrawiam :)
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35 + x = 3 * (7 +x)
35 + x = 21 +3x
35 - 21 = 3x - x
2x = 14
x = 7 ------ odowiedź
35 + x = 3 * (7+x)
35 + x = 21 + 3x
2x = 14
x = 7
Matka będzie 3 razy starsza od córki za 7 lat
Sprawdzenie:
35 + 7 = 42
7 + 7 = 14
42/14 = 3
----------------------------------------------------------------------------------------------------------
Feci, quod potui, faciant meliora potentes
Pozdrawiam :)