Klasy 6 zebrały 205 kg makulatury 6a zebrała o 45kg mniej niż 6b ile zebrała każda z klas Rozwiąż za pomocą równań
6a ---x - 45
6b --- x
x - 45 + x = 205
2x - 45 = 205
2x = 205 + 45
2x = 250
x = 250 : 2
x = 125
6a ---x - 45 = 125 - 45 = 80kg
6b --- x = 125kg
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6a ---x - 45
6b --- x
x - 45 + x = 205
2x - 45 = 205
2x = 205 + 45
2x = 250
x = 250 : 2
x = 125
6a ---x - 45 = 125 - 45 = 80kg
6b --- x = 125kg