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/sci/ - Science & Math

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7576016 No.7576016 [Reply] [Original]

2x + 7y = 20

6x - 2y = 14

>> No.7576018

ok

>> No.7576021
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7576021

2x + 7y = 20
2x = 20 - 7y
6x = 60 - 21y

6x - 2y = 14
6x = 14 + 2y
14 + 2y = 60 - 21y
2y = 46 - 21y
y = 32 - 11.5y
12.5y = 32
y = 0.390625

2x + 7y = 20
2x + 2.734375 = 20
2x = 17.265625
x = 8.6328125

>> No.7576022

>>7576016
I want /pol/ to leave

>> No.7576024

>>7576016
y=2
x=3

faggot

>> No.7576032
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7576032

x = 3

y = 2

>> No.7576034

Why

>> No.7576037

>>7576022
> posting muh /pol/ boogeyman in every thread
reddit isn't allowed on /sci/ fuck off already

>> No.7576081

>>7576016
I'm gonna watch this thread :^D

>> No.7576095

2x + 7y = 20

2+7= 9, 20-9 = 11, 1+1= 2, therefore y=2

then 2x + 7(2) = 20
2x = 6

divide 6 by the 2 and you get 3, erase the x to get 3=3, and so x=3

answers: y=2 and x=3

>> No.7576149

2x + 7y = 20
6x - 2y = 14

Set z = 14 + x

>> No.7576196

>>7576021
What the fuck happened here

>> No.7576218

>>7576016
Try Linear Algebra

>> No.7576412
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7576412

I bet im the only person to use Cramer's rule for this problem

>> No.7576415

>>7576021
[Bait]

>> No.7576429

>>7576415
det([bait])=bait
Solved it for you, bud.

>> No.7576477

DX/Dy = [double integral] 2/6 +5y -17

Idk what to do next

>> No.7577258

>>7576412
Shit tier notebooks, lad. Invest in journals.

>> No.7577376

>>7576037
> posting muh reddit boogeyman in every thread
You should follow him out the door

>> No.7577539

>>7577376
>posting muh "get out" boogeyman in every thread
This isn't your secret club.

>> No.7577676

>>7577258
you are getting jewed by purchasing those journals

>> No.7577680

>>7576021
well yes, its trivial

>> No.7577721

>>7576016
octave:10> A = [2,7;6,-2]
A =

2 7
6 -2

octave:11> b = [20;14]
b =

20
14

octave:12> c = A \ b
c =

3
2

>> No.7577741
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7577741

y= --2
x=17

>> No.7577815

>>7577741
What?

>> No.7577838

>>7577539
>posting "muh secret club" boogeyman in every thread
It might not be a secret but the site still has an established culture, normalfags need to leave.

>> No.7578209

>>7577838
>>>/r9k/

>> No.7578278

>>7577741
6*17 - 2*-2 = 102 + 4 =/= 14

>> No.7578281

>>7576412
what a faggot
i could have figured it out within 8 guesses rather than your smart ass method

>> No.7578434

>>7576024
>>7576032
>>7576095
Nice..

>> No.7578453

>>7578434
Epic meme

>> No.7578780

>>7576021
Spot your own typo. It derailed your entire equation.