-x + 3y − z = -9
x − 2y + 2z = 8
2x − y + z = 7

Write 17/20 as a decimal and as a percent.

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?