algebra

posted by .

I am having a hard time - please guide me to solve by the substitution method.
5m + n = 36
m -7n = 36

A big ty:)

  • algebra -

    Since m = 7n + 36,
    substitute 7n + 36 for m in the first equation.

    That should lead to
    35n + 180 + n = 36
    which is the same as
    36n = -144
    n = -4
    Now solve for m with either of your first two equations.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Substitution Method-Plz help

    Use the Substitution method to solve the system of equations. x + y = -4 x - y = 2 solve for x in the second equation. x= y+2 Put that in for x in the first equation: x+y=-4 (y+2) + y = -4 solve for y. Then, x= y+2 i don't get it.How …
  2. Algebra II

    How do you solve the linear equations x+y=5 3x-y=3 by use of the Substitution Method?
  3. algebra

    Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?
  4. Linear Equations

    Can you please help solve this equation using the substitution method?
  5. substitution method

    Solve by substitution method please help me solve this. I do not know how to do this at all. The question is 3x+8y=33 and x=31-6y I know that I have to plug x into the first x like 3(31-6y)+ 8y = 33 but i do not know what to do from …
  6. algebra

    use the Substitution Method. Please give it a try. y = 3x + 4 5x + 3y = 12 Why is the substitution method preferred in this case?
  7. algebra

    solve by the substitution method: 8m+n=47 m-5n=52 thank you having trouble completing please show all work so I can learn better
  8. Math

    I still don't know how to directly solve this problem. Can someone guide to solve this system of equation by using the substitution method?
  9. Algebra 1

    bobpursey, In this problem you helped me with earlier: Solve using any appropriate method. y = 2× - 5, y = ½× + 1 Substitution, substitute for y. 2×-5=½ × + 1 3/2 x=6 x=4 y= 2*4-5=3 How did you choose which method you were going …
  10. Algebra

    Please solve using substitution method. 2n-11=m/4 n=m/-3

More Similar Questions