1. 7a + 9 =
2. 6x -3 =
Odpowiedź:
a) 3a+5a+9-a=8a+9-a=7a+9
b)8x-2x-7+4=6x-3
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1. 7a + 9 =
2. 6x -3 =
Odpowiedź:
a) 3a+5a+9-a=8a+9-a=7a+9
b)8x-2x-7+4=6x-3