Answer:
x+y = 12 and x+y+z=17 where z=8 solve for y = 5/8
Step-by-step explanation:
Solve the following system:
{x + y = 12 | (equation 1)
x + 9 y = 17 | (equation 2)
Subtract equation 1 from equation 2:
{x + y = 12 | (equation 1)
0 x+8 y = 5 | (equation 2)
Divide equation 2 by 8:
{x + y = 12 | (equation 1)
0 x+y = 5/8 | (equation 2)
Subtract equation 2 from equation 1:
{x+0 y = 91/8 | (equation 1)
0 x+y = 5/8 | (equation 2)
Collect results:
Answer: x = 91/8
, y = 5/8
