## raebaby420 2 years ago What is a possible first step to eliminate the variable x in the following system? 2x – 7y = 3 4x + 5y = –2

1. Directrix

Multiply each member of this equation by (-2) and post the result here. Equation: 2x – 7y = 3

2. ryan.g.campbell.17

Top one by -2 :) -4x + 14y = -6 4x + 5y = -2 19y = -8 and you can work it from there :)

3. Directrix

@ryan.g.campbell.17 ---> This question was for the Asker and not for your deus ex machina. Read the Code of Conduct. @raebaby420 Yes. The objective in the Addition/Subtraction method of solving simultanteous linear equations is to multiply by a number that will cause the coefficient of the variable you wish to eliminate to add out.

4. raebaby420

Ok.. so i think i understand it

5. raebaby420

Soo i just gotta single out my coefficient?

6. Directrix

@raebaby420 Let's try another one. Same instructions. Answer? 3x + 4y = 7 3x - 4y = 10

7. raebaby420

umm haha i have no clue.

8. raebaby420

whats the first step i have to complete?

9. Directrix

Question: What added to 3x gives 0? (3x) + ? = 0 ? =