Question

Can someone please guide me through this System of Equation?

Answer 1

{2x + 7y = 1
{-3x - 4y = 5

Answer 2

@agent0smith @ganeshie8 @brendalopez @ranga

Answer 3

@yazed

Answer 4

No, solving the System of Equation.

{2x + 7y = 1
{-3x - 4y = 5

Answer 5

I want to use the substitution method, would it be correct to make y = 1 - 2x div 7?

Answer 6

Ok so
2x+7y=1
-2x. -2x
---------------
7y=1-2x
--- -------
7. 7

So
y=1-2x
-----
7

Answer 7

To me it is a LOT easier to multiply
2x + 7y = 1 by 1.5 and add it to the other equation

Answer 8

So yes, that's correct. Now u want to suns tittle this value of y into the second equation

Answer 9

-3x - 4y = 5
+3x +3x

-4y = 3x + 5
/-4 /-4 /-4

y = -3/4x - 1.25

You can plug that in for y or put the first equation into slope-intercept form

Answer 10

I would've done elimination method >.>

Answer 11

Yeah, I don't like those awkward fractions either.

Answer 12

y = -0.75y -1.25 if you want to make it easier when you plug in.

Answer 13

Why not
2x + 7y = 1
times 1.5
3x + 10.5y = 1.5 then added to
-3x - 4y = 5

Answer 14

6.5y = 6.5
y = 1

Answer 15

Okay, thank you @nikato @tHe_FiZiCx99 and @wolf1728 All great, I wish I could give you all medals.

Answer 16

Mhmm

Answer 17

2x + 7 = 1
2x = -6
x = -3

Answer 18

Ur welcome!!

Answer 19

and NO ugly fractions

Answer 20

u r welcome :-)

Answer 21

Ah sorry I couldn't answer this question dar bear, but I can tell you that I love you and strive for good grades ^.^

Answer 22

^ ( ._.)

Answer 23

It's okay bae @brendalopez

Answer 24

:*

Answer 25

:* x2