To solve these equations:
1) 50(x+16) = 4015050x + 800 = 4015050x = 39350x = 787
2) 2700 + y400 = 170700y400 = 168000y = 420
3) (12300 - 300) : k = 3012000 / k = 30k = 400
Therefore, x = 787, y = 420, and k = 400.
To solve these equations:
1) 50(x+16) = 40150
50x + 800 = 40150
50x = 39350
x = 787
2) 2700 + y400 = 170700
y400 = 168000
y = 420
3) (12300 - 300) : k = 30
12000 / k = 30
k = 400
Therefore, x = 787, y = 420, and k = 400.