Verified answer

1)(200x⁴y³ - 55x³y²) : (5x³y²) + 11 = (5x³y²) * (40xy - 11) : (5x³y²) + 11 =

= 40xy - 11 + 11 = 40xy

40xy = 40xy

2) 1,1a - (12,1a³b² - 44a²b²) : (11a²b²) = 1,1a - (11a²b²)*(1,1a - 4) : (11a²b²) =

= 1,1a - 1,1a + 4 = 4

4 = 4

3) 1,6s⁴t : (0,04s³t) - 41,22s = 40s - 41,22s = - 1,22s

- 1,22s = - 1,22s

4) (8,47n⁵m⁴ + 77n⁴m³) : (7,7n⁴m³) - 10 = (7,7n⁴m³) * (1,1nm + 10) : (7,7n⁴m³) - 10 = 1,1nm+ 10 - 10 = 1,1nm

1,1nm = 1,1nm