Let the number of 2 points be x, and the number of 3 points be y.
Therefore x + y = 14 .....(i)
2*x + 3*y = 30 .....(ii)
x + y = 14
2x + 3y = 30
From (i), x = 14 - y, substitute this into (ii)
2*(14 - y) + 3y = 30
28 - 2y + 3y = 30
28 + y = 30
y = 30 - 28 = 2
y = 2,
x = 14 - y = 14 - 2 = 12, x = 12.
The number of 2 points made were 12