a. 5x – 3y = 10
y = x2 – 5x + 6
b. 3x – 5y + z = 10
x2 + y2 + z2 = 8
c. 5x – 3y + 2z = 10
3x + 4y – z = 15
2x – 5y – 3z = 10
d. 15x – 23y + 2z = 200
31x + 42y – ½ = 150
23x – 45y – 33z = 100
e. x – 3y + 2z = 20
a. 5x – 3y = 10
y = x2 – 5x + 6
b. 3x – 5y + z = 10
x2 + y2 + z2 = 8
c. 5x – 3y + 2z = 10
3x + 4y – z = 15
2x – 5y – 3z = 10
d. 15x – 23y + 2z = 200
31x + 42y – ½ = 150
23x – 45y – 33z = 100
e. x – 3y + 2z = 20