8 есеп 136 бет 4 сынып Х×20=1060×30; 400350÷х=1250-1200; х÷200=43200÷40

Решите задачу:

$1)x \times 20 = 1060 \times 30 \\ x = \frac{1060 \times 30}{20} \\ x = 53 \times 30 \\ x = 1590 \\ 2)400350 \div x = 1250 - 1200 \\ 400350 = 50 \times x \\ x = \frac{400350}{50} \\ x = 8007 \\ 3)x \div 200 = 432000 \div 40 \\ x = \frac{43200}{40} \times 200 \\ x = 180 \times 20 \\ x = 3600$