A down - F down^2 = 2015
D down + I across = 2015
4 * D down - B down = 2015
E down - B down^2 = 2015
G across - H down = 2015
K down - C across^2 = 2015
L across / Y down = 2015
M across * Q across = 2015
N across^2 - S across = 2015
O down - W across = 2015
P down - 9 * J across = 2015
U across - R down = 2015
3 * V down + Z across = 2015
X across - T down = 2015