Завдання:
Спрости вираз:
1) 9 + a – (–13) – a – 8;
2) –25 – b + 12 – (–6) + b + 9.
Розв'язок:
1) 9 + a – (-13) – a – 8 = 9 + 13 – 8 = 14
2) -25 – b + 12 – (-6) + b + 9 = -25 + 12 + 6 + 9 = 27 – 25 = 2
Спрости вираз:
1) 9 + a – (–13) – a – 8;
2) –25 – b + 12 – (–6) + b + 9.
1) 9 + a – (-13) – a – 8 = 9 + 13 – 8 = 14
2) -25 – b + 12 – (-6) + b + 9 = -25 + 12 + 6 + 9 = 27 – 25 = 2