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Systems of Two Linear Equations in Two Variables

SAT Math· difficulty 3/5

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

  • A

    3

  • B

    1

    check_circle
  • C

    2

  • D

    4

Explanation

From above x=3x = 3. 2(3)+2y=82(3) + 2y = 8 → y=1y = 1.

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