Răspuns:
Explicație pas cu pas:
2a - 3 = -2*1/4 - 3 = -1/2 - 3 = -1/2 - 6/2 = -7/2
I-7/2I = 7/2
____________
2a + 1 = -2*1/4 + 1 = -1/2 + 1 = -1/2 + 2/2 = 1/2
I1/2I = 1/2
7/2 + 1/2 = 8/2 = 4
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Răspuns:
Explicație pas cu pas:
2a - 3 = -2*1/4 - 3 = -1/2 - 3 = -1/2 - 6/2 = -7/2
I-7/2I = 7/2
____________
2a + 1 = -2*1/4 + 1 = -1/2 + 1 = -1/2 + 2/2 = 1/2
I1/2I = 1/2
____________
7/2 + 1/2 = 8/2 = 4