Systems of Two Linear Equations in Two Variables

SAT Math· difficulty 4/5

Solve: x+y+z=6x + y + z = 6, x+y=4x + y = 4, y+z=5y + z = 5. What is zz?

  • A

    2

    check_circle
  • B

    4

  • C

    3

  • D

    1

Explanation

From eq1 - eq2: z=2z = 2.

Want 10 more like this — adaptive to your weak spots?

Related questions