Ответ:
-19 + 18.74= - (19 - 18.74) = - 0.26
-0.26 + (-18.74)= - (0.26 + 18.74) = - 19
Пошаговое 8 + (-7) = 8 - 7 = 1
1 - (-15) = 1 + 15 = 16
16 - (-8) = 16 + 8 = 24
24 - 20 = 4
-83 + 57= - (83 - 57) = - 26
-26 + (-18)= - (26 + 18) = - 44
-44 + (-45)= - (44 + 45) = - 89
-89 + 83= - (89 - 83) = - 6
там оч плохо видно
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Ответ:
-19 + 18.74= - (19 - 18.74) = - 0.26
-0.26 + (-18.74)= - (0.26 + 18.74) = - 19
Пошаговое 8 + (-7) = 8 - 7 = 1
1 - (-15) = 1 + 15 = 16
16 - (-8) = 16 + 8 = 24
24 - 20 = 4
-83 + 57= - (83 - 57) = - 26
-26 + (-18)= - (26 + 18) = - 44
-44 + (-45)= - (44 + 45) = - 89
-89 + 83= - (89 - 83) = - 6
там оч плохо видно