Odpowiedź:
a) 3/5 = 2(x+1)/4
12 = 10x + 10
6 = 5x + 5
b) 5/4 = 2(x+1)/3
15 = 8x + 8
8x + 8 = 15
c) 5/3 = 2(x+1)/4
20 = 6x + 6
10 = 3x + 3
d) 3/5 = 2x/4
12 = 10x
5x = 6
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Odpowiedź:
a) 3/5 = 2(x+1)/4
12 = 10x + 10
6 = 5x + 5
b) 5/4 = 2(x+1)/3
15 = 8x + 8
8x + 8 = 15
c) 5/3 = 2(x+1)/4
20 = 6x + 6
10 = 3x + 3
d) 3/5 = 2x/4
12 = 10x
5x = 6