Solving the first equation 14XX + 27X = 656:
14X^2 + 27X - 656 = 0
Factoring the quadratic equation, we get:
(2X - 41)(7X + 16) = 0
So, X = 41/2 or X = -16/7
Solving the second equation 81y - 38y = 645:
43y = 645
y = 645 / 43
y = 15
Therefore, the solutions to the equations are:
X = 41/2 or X = -16/7y = 15
Solving the first equation 14XX + 27X = 656:
14X^2 + 27X - 656 = 0
Factoring the quadratic equation, we get:
(2X - 41)(7X + 16) = 0
So, X = 41/2 or X = -16/7
Solving the second equation 81y - 38y = 645:
43y = 645
y = 645 / 43
y = 15
Therefore, the solutions to the equations are:
X = 41/2 or X = -16/7
y = 15