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anonymous
 4 years ago
can anyone exsplain how you would use the elimination method to solve these equations
1) 5x + 2y = 5
&
2) 3x  4y = 23
anonymous
 4 years ago
can anyone exsplain how you would use the elimination method to solve these equations 1) 5x + 2y = 5 & 2) 3x  4y = 23

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radar
 4 years ago
Best ResponseYou've already chosen the best response.1Which variable do you wish to eliminate, x or y? Your choice.

radar
 4 years ago
Best ResponseYou've already chosen the best response.1I personally would choose y, but you may prefer x. Which one.....choose so we can start!

radar
 4 years ago
Best ResponseYou've already chosen the best response.1Good choice, but x would of been ok also. Y it is, we must get the coefficient of y on one equation to equal the coefficient of y in the other equation. We must ultimately have equal coefficients for y.

radar
 4 years ago
Best ResponseYou've already chosen the best response.1To do that, we will multiply the first equation by 2. Getting:10x+4y=10 Note that we now have 4 for the coefficient of y in both equations. Do you follow with understanding?

radar
 4 years ago
Best ResponseYou've already chosen the best response.1These are the two equations that we will use to eliminate Y All we have to do is to add those two equations and the Y will just disappear (have a 0 coefficient)

radar
 4 years ago
Best ResponseYou've already chosen the best response.1Adding them I get 13x=13 so x = 1

radar
 4 years ago
Best ResponseYou've already chosen the best response.1Now substitute the 1 for x on one of the original equations and solve for Y. Now ur good.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so id take x and use 1 on 10x ? like this 10 1 = 9?

radar
 4 years ago
Best ResponseYou've already chosen the best response.1I would take the original equation 5x+2y=5 (you could of used the other one just as well) Now substisute the value found for x (the 1) getting: 5(1) + 2y =5 using algebra to solve: 5 +2y = 5 2y=10 y=5 the answer is y=5, it should work also with the second equation.

radar
 4 years ago
Best ResponseYou've already chosen the best response.1Just to confirm. 3x4y=23 3(1)4y=23 34y=23 4y=20 y=5 as you see it works, it is a good answer.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0wow thanks a ton man. helped alot.

radar
 4 years ago
Best ResponseYou've already chosen the best response.1Summarizing: 1. Select a variable to eliminate. 2. Multiply or divide the equation to obtain equal coefficients (if they are opposite sign OK) 3. Add or subtract the two equations to eliminate the coefficients (if sign are opposite add, if they are same subtract) 4. Solve for remaining variable 5. substitute new found value into original equation and solve for other variable.

radar
 4 years ago
Best ResponseYou've already chosen the best response.1@Luis Rivera what is that about???
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