Question

2199+(25×9×4)+101
810÷(3×30)+250÷(20+30)

Answer 1

Ответ:

1) 3200;

2) 14

Пошаговое объяснение:

1) 2199 + (25 × 9 × 4) + 101 = 2199 + 900 + 101 = 3200

2)

$\displaystyle\frac{810}{3*30} +\frac{250}{20+30} =\frac{810}{90} +\frac{250}{50} =9+5=14$

Answer 2

$2199 + (25 \times 9 \times 4) + 101 = (25 \times 9 \times 4) = 900 + 2199 + 101 = 3200 \\ 810 \div (3 \times 30) + 250 \div (20 + 30) = (3 \times 30) = 90(20 + 30) = 50 \: 810 \div 90 = 9 \: 250 \div 50 = 5 \: 9 + 5 = 14$
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