DragonFlame
Solve, using the substitution method.
4x + 2y = 11
x – 2 = – 2y



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DragonFlame
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Is \[2y=114x\] Right?

Potatoes.ramu
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Multiply the second equation by 2

Potatoes.ramu
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and then subtract it from the first

DragonFlame
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Ok, so \[2x4=4y?\]

Potatoes.ramu
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Wait.. actually multiply the second equation by 4. That way you eliminate the x term

DragonFlame
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\[4x8=8y\]

DragonFlame
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How would I subtract it from the first equation? X becomes eliminated than what?

DragonFlame
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@hartnn

Potatoes.ramu
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When x is eliminated, you can find the y term

hartnn
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substitution method. (not elimination method)
4x + 2y = 11
x – 2 = – 2y (find 'x' from here, by adding 2 on both sides)

Potatoes.ramu
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Once you find the y term, you can substitute it in any of the above equations, and then you get x.

DragonFlame
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x=y?

DragonFlame
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So 6y=11?

Potatoes.ramu
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@hartnn you'll still have the y term

hartnn
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x – 2 = – 2y
x = 22y
plug this in 1st equation
4(22y) +2y =11
simplify and get y

hartnn
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ask if you don't get that ^

Potatoes.ramu
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@hartnn , but can't you solve it using elimination as well?

DragonFlame
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88y+2y=11

DragonFlame
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10y=3?

hartnn
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the system can be solved by elimination method, but since the question specifically asks for substitution, we need to use substitution

hartnn
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8y +2y = ... ?

DragonFlame
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6y

DragonFlame
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86y=11
6y=3
y=1/2

hartnn
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YES :)

hartnn
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now find x

DragonFlame
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Okkkkk :)

DragonFlame
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x=3

DragonFlame
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So its this bit.ly/1ewUix3

hartnn
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\(\huge \checkmark \)

DragonFlame
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(3,1/2) Right?

hartnn
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yes, it is correct.

DragonFlame
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Thanks! Should I give the medal to potatoes or you? He tried... but you helped

hartnn
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i'm not here for medals. you understand thats my medal :)

DragonFlame
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:D

Potatoes.ramu
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Also.. I'm a she :) And my method was wrong for this problem! Sorry!