x = two points shots
y= 3 point shots
x + y = 35
2x+3y = 79
Solve the first equation for x:
x = 35-y
Replace the value of x in the second equation, and solve for y
2 (35-y) + 3y =79
70-2y+3y = 79
-2y+3y = 79-70
y= 9
Replace y=9 in the first equation, and solve for x
x+y= 35
x+9 =35
x =35-9
x = 26
Two point shots = 26
Three point shots = 9