1) (72 + a) + 29 = (72 + 29) + a = 101 + a;
2) 43 + (96 + b) = (43 + 96) + b = 139 + b;
3) m + 1001 + 9999 = m + (1001 + 9999) = m + 11000;
4) 1273 + n + 2127 = (1273 + 2127) + n = 3400 + n.
Завдання №223
Спростили вирази.
1) (72 + a) + 29 = (72 + 29) + a = 101 + a;
2) 43 + (96 + b) = (43 + 96) + b = 139 + b;
3) m + 1001 + 9999 = m + (1001 + 9999) = m + 11000;
4) 1273 + n + 2127 = (1273 + 2127) + n = 3400 + n.