Post a New Question

math urgent!

posted by .

find the values of x and y that solve te following system of equations

3x+2y=-22
5x-9y=25

  • math urgent! -

    first one times 9 ---> 27x + 18y = - 198
    2nd one times 2 ---> 10x - 18y = 50

    add them : 37x = -148
    x = -4

    I will let you finish it.

  • math urgent! -

    3x+2y=-22 (1)
    5x-9y=25 (2)
    Multiply (1) by 9 and (2) by 2 to get the y's to cancel
    27x+18y=-198 (3)
    10x-18y=50 (4)
    Add (3) and (4) together
    37x=-148
    Divide both sides by 37
    x=-4
    Substitute that in either original equation (1) or (2) to solve for y. Check to make sure it works for the other equation, as well.

Answer This Question

First Name
School Subject
Your Answer

Related Questions

More Related Questions

Post a New Question