math

posted by .

use subsitution system to solve
4x+5y=21
Y=3x-11

  • math -

    4x+5y=21
    Y=3x-11

    4x + 5(3x - 11) = 21
    4x + 15x - 55 = 21
    19x = 21 + 55
    19x = 76
    x = 4

    y = (3 * 4) - 11

    y = 1

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. subsitution method

    Can some one show me how to use the Substitution method to solve the system of these equations. x + y = -4 x - y = 2 x + y = 10 y = x + 8 on the first set. Solve for either x or y in either equation, then put that value into the other …
  2. algebra

    I have tried these problem cannot get the answer so could some one help me. Solve by the subsitution method. 2x-7y=-11 2x +17=y What is the solution of the system.
  3. math

    -w-z=-2 and 4w+5z=16 im trying to solve this equation by using subsitution
  4. algebra

    solve using the subsitution method 4x+4y=36 4x+4y=12 If the system has no solution or an infinite number of solutions, please help me understand it.
  5. Algebra 2 Helpp :(

    QUESTIONS (vvv) (1) Solve the system by subsitution 2x + y = -11 3 - 4y = 11 (2) Solve the system by elimination 2x + 6 = -12 5x - 5y = 10 (3) What is the solution of the following system?
  6. math

    solve by using subsitution: 4x+y=2 3y+2x=-1
  7. math

    solve by using subsitution: 4x+y=2 3y+2x=-1
  8. math

    solve by using subsitution: 4x+y=2 3y+2x=-1
  9. math

    solve by using subsitution: 4x+y=2 3y+2x=-1
  10. math

    solve by using subsitution: 4x+y=2 3y+2x=-1

More Similar Questions