Respuesta :
Answer:
6
Step-by-step explanation:
6 + x + y = 20
Subtract 6 from each side
x+y = 20-6
x+y = 14
x + y = k
14 = k
we want to find 20 -k
20 - 14
6
Answer:
6
Step-by-step explanation:
6 + x + y = 20
Subtract 6 from each side
x+y = 20-6
x+y = 14
x + y = k
14 = k
we want to find 20 -k
20 - 14
6