Пошаговое объяснение:
[tex] (- 5.8 + a) + (4.7 - a) = - 5.8 + a + 4.7 - a = ( - 5.8 + 4.7) + (a - a) = - 1.1 + 0 = - 1.1[/tex]
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Пошаговое объяснение:
[tex] (- 5.8 + a) + (4.7 - a) = - 5.8 + a + 4.7 - a = ( - 5.8 + 4.7) + (a - a) = - 1.1 + 0 = - 1.1[/tex]