SOLUTION: -7x+y=-19 -2x+3y=-19 -7x-8y=9 -4x+9y=-22 5x+4y=-30 3x-9y=-18 -14=-20y-7x 10y+4=2x 3+2x-y=0 -3-7y=10x Solve by elimination

  -7x +  y = -19
  -2x + 3y = -19

Multiply the first equation by -3

  21x - 3y =  57
 - 2x + 3y = -19

Add the two equations

  19x + 0y =  38

Solve for x

    x      =  2

Substitute the now known value of x into either original equation

-2(2) + 3y = -19
        3y = -15
         y = - 5

Check your work:

-2(2) + 3(-5) =  -4 - 15 = -19 -- Checks
-7(2) +   -5  = -14 -  5 = -19 -- Checks

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