1. Questions

Algebra

To solve the system of equations, which expression could be substituted for x into the first equation?

3x-5y=14
x+4y=10

a)10-4y
b)4y+10
c)(1/4)x+(5/2)
d)(-1/4)x+(5/2)

I have another problem just like this one so if you could explain how to solve this one I can (hopefully) solve the other,thanks

Solve the second equation for x:

x + 4 y = 10 --->

x = 10 - 4 y

ok I think I got the idea,lets try this one.

2x+7y=10
x-2y=15

I'm thinking 2y-15 here are the choices:
a)(1/2)x+15
b)(1/2)x-15
c)2y+15
d)2y-15

x-2y=15 ---->

x = 2y + 15

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
maddie

  1. to solve the system of equations, whcih expression could be substituted for x into the first equation? First - 2x+7y=10; second = x-2y=15

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    Janet

  2. wait, so you use reverse Order of Operations to solve x - 2y = 15, right?
    Im in 7th grade and i still dont really know how to do this type of math...

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    Elizabeth Rodrigo

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    1. For the following system of equations, what is the x-value of the solution? -x+2y=6 6y=x+18 a. -18 b. 0*** c. -6 d. 3 2. Solve the following system of equations using substitution. What is the value of y? 2x+3y=105 x+2y=65 a.

  2. Math (check plz)

    y = 2x + 4 2x - y = 6 Solve the system of equations using substitution. A) (2,8) B) (2,-8) C) (10,24) D) no solution

  3. math help pls pls

    Two systems of equations are shown below: System A 6x + y = 2 −x − y = −3 System B 2x − 3y = −10 −x − y = −3 Which of the following statements is correct about the two systems of equations? The value of x for

  4. How do I do this.?(Math.)

    Use the Substitution method to solve the system of equations. y - 2x = -5 3y - x = 5 Solve one of the equations for x or y. Let's solve the first one for y: y - 2x = -5 y = 2x - 5 Now let's substitute 2x - 5 for y in the second

  1. Algebra

    To solve the following system of equations by elimination, which step would best to perform first? 1/2a - 1/4b = 1 1/3a + b= 3 A. Add the two equations. B. Subtract the two equations. C. Multiply the first equation by 4. D. Divide

  2. Mathematics

    Solve the system of equations by finding the reduced row-echelon form of the augmented matrix for the system of equations. x + y - z = -2 2x - y + 3z = 9 x - 4y - 2z = 1

  3. algebra 2

    to solve the system of equations which expression could be substituted for x into the first equation? first: 2x+7y=10 second: x-2y=15

  4. precalculus

    please check my answers 1.Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6 answer:2x+4y+z=-4 8y-5z=-17 z=1 2.Find the solution to the system of equations

  1. Algebra Linear Inequalities Help

    8. The system below has the solution of (1,3) where A, B, C, D, E, and F are all nonzero real numbers. Ax+By=C, Dx+Ey=F Which of the following systems would not have (1,3) as the solution? A- Ax+By=C & (2A-D)x+(2B+E)y=C-2F B-

  2. algebra

    2a+3b-4c=7, a-b+2c=6 a) find an ordered triple of numbers (a,b,c) that satisfies both equations b) can you find a second ordered triple that satisfies both equations c) solve for b in terms of a, and solve for c in terms of a. how

  3. Math

    A) A rectangle has perimeter 64 cm and area 23 cm^2. Solve the following system of equations to find the rectangle's dimensions. length=23/width length + width = 32 B) Solve the system of equations x^2+y^2=1 xy=0.5

  4. Algebra 2

    1.) Write a system of equations that has NO solution. 2.) If you wanted to eliminate the y variables in the system of equations below, what would you multiply the first and second equations by?( Do not solve the equation) 2x-3y=8

View more similar questions or ask a new question.