a-b/a+b = -0.7-(-0.3)/-0.7+(-0.3) = -0.7+0.3/-0.7-0.3 = = -0.4/-1 = 0.4
Ответ: 3)
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a-b/a+b = -0.7-(-0.3)/-0.7+(-0.3) = -0.7+0.3/-0.7-0.3 = = -0.4/-1 = 0.4
Ответ: 3)