1. 200 * Х = 1200 : 3
200 Х = 400
Х = 200
2. Х + 100 * 3 = 500
Х + 300 = 500
Х = 500 - 300 = 200
3. (42 + 8) * Х = 1500 : 30
50Х = 50
Х = 1
4. (46 -6) * Х + 10 = 170
40Х +10 = 170
40Х = 170 -10 = 160
Х = 160 : 40 = 4
5. (72 - 2) х = 50 * 11 - 200
70 х = 550 - 200
70 х = 350
Х = 350 : 70 = 5