Răspuns :
F + T = 44 => F = 44 - T
( F- 4 )x3 = T - 4
( 44 - T - 4 )x3 = T - 4
( 40 - T )x3 = T - 4
120 - 3T = T - 4
4T = 124
T = 34 => F = 10
F + T = 44 => F = 44 - T
( F- 4 )x3 = T - 4
( 44 - T - 4 )x3 = T - 4
( 40 - T )x3 = T - 4
120 - 3T = T - 4
4T = 124
T = 34 => F = 10