Răspuns :
x+9,25
----------=7,35
2
x+9,25=7,35x2
x+9,25=14,7
x=14,7-9,25
x=5,45
--------------------------
S={5,45}
----------=7,35
2
x+9,25=7,35x2
x+9,25=14,7
x=14,7-9,25
x=5,45
--------------------------
S={5,45}