To solve the equations:
1) 16×25 - 28x = 612 ÷ => 400 - 28x = 20=> -28x = -19=> x = 7
2) 27:x + 405:9 = 4=> 27/x + 45 = 4=> 27/x = => x = 9
Therefore, the solution for the equations are x = 7 and x = 9.
To solve the equations:
1) 16×25 - 28x = 612 ÷
=> 400 - 28x = 20
=> -28x = -19
=> x = 7
2) 27:x + 405:9 = 4
=> 27/x + 45 = 4
=> 27/x =
=> x = 9
Therefore, the solution for the equations are x = 7 and x = 9.