Respuesta :
x = regular 2 point shots and y = free throws
x + y = 21.....multiply by -1
2x + y = 32
---------------
-x - y = -21 (result of multiplying by -1)
2x + y = 32
--------------add
x = 11....so he scored 11 regular 2 point shots
x + y = 21
11 + y = 21
y = 21 - 11
y = 10....he scored 10 free throws
x + y = 21.....multiply by -1
2x + y = 32
---------------
-x - y = -21 (result of multiplying by -1)
2x + y = 32
--------------add
x = 11....so he scored 11 regular 2 point shots
x + y = 21
11 + y = 21
y = 21 - 11
y = 10....he scored 10 free throws