Question 1203879
{{{79}}} students played soccer or basketball, 

{{{30 }}}played soccer, and {{{14}}} played both

if so, then {{{30 -14=16}}} played soccer only


{{{ drawing( 400, 400, -2, 10, -2, 10,
circle(2,2,2), circle(4,4,2),
locate(1,4.5,S), locate(5,6,B),locate(3,3,14),locate(2,2,16),
graph( 400, 400, -2, 10, -2, 10, 0)) }}}

since {{{79}}} students played soccer or basketball, then {{{79-(16+14)=49}}} played basketball only



so, we have

{{{ drawing( 400, 400, -2, 10, -2, 10,
circle(2,2,2), circle(4,4,2),
locate(1,4.5,S), locate(5,6,B),locate(3,3,14),locate(2,2,16),locate(4,4,49),
graph( 400, 400, -2, 10, -2, 10, 0)) }}}


How many of the students played basketball?

look at set B only

{{{14+49= 63 }}}