Systems of Two Linear Equations in Two Variables

SAT Math· difficulty 3/5

Solve: 7x2y=197x - 2y = 19 and 2x+2y=82x + 2y = 8. What is xx?

  • A

    3

    check_circle
  • B

    1

  • C

    2

  • D

    4

Explanation

Adding: 9x=279x = 27x=3x = 3.

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

Related questions