4x + y =3 x + y - z = 9 2x + 2y + z = 0
1 answer:
Answer:
Step-by-step explanation:
{4x + y = 3
{x + y - z = 9 ←
{2x + 2y + z = 0 ←
{4x + y = 3
{3x + 3y = 9 >> Combined equation
−¾[4x + y = 3]
{−3x - ¾y = −2¼ >> New Equation
{3x + 3y = 9
_________
2¼y = 6¾
___ ___
2¼ 2¼
[Plug this back into all three equations to get the z-value of −6, and the x-value of 0];
;
I am joyous to assist you anytime.
You might be interested in
Divide both the numerator and denominator by 9 to get;
Convert the improper fraction to a mixed number;