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anonymous
 5 years ago
solve by substitution .
3x4y=8
x2y=2
anonymous
 5 years ago
solve by substitution . 3x4y=8 x2y=2

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0simply take one of the equations and solve for y then plug that equation into the other to get x. Once you get your x value just plug it back into the y equation that you found earlier to get your y value. If you need additional help just ask.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0could you please guide me through that?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0alright. Let's do this: Take the x2y=2. Move the x to the other side via subtraction to get 2y= 2x Now you need to get y by itself so divide each side by 2. You will then get y = (2x)/2. Now that you have this you can take this y value and plug it back into the other equation. So

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So you will have 3x4((2x)/2)=8. Now solve for x. I hope you can do this... After you find the value of x. You plug it back into your equation of y = (2x)/2 to get your y value.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0how do i solve for x? sorry, im rally bad n math =P

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0That's fine. Now ignore what I put above here is a faster way. You have your 2 equations.... Take the x2y=2 and instead of solving for y, solve for x instead (don't have to deal with fractions then). Add the 2y over to the right to get x = 2+2y. With this in mind, plug this into the other equation of 3x4y=8 for x. Thus you will get 3(2+2y)4y=8. Distribute the 3 within the () to get 6+6y4y=8. Combine your like terms by subtracting 6y4y=2y and moving the 6 to the 8 by subtraction. When that is all said and done, you will end up with 6y=6. Simply dividing both sides by 6 to get your y value which is 1. Now that you have you y=1 plug that back into you x equation you found earlier of x=2+2y. So you will get x=2+2(1) in otherwords 4. So x=4 and y=1.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh that makes so much sense now =P thank you SOO MUCH =}
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