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1.6x + 2y = 0
4x + y = -1
substitution

Question

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1.6x + 2y = 0
4x + y = -1
substitution

australopithecus · Answer

y = -1-4x

1.6x + 2(-1-4x) = 0
solve for x
what ever you get as x sub into one of the original equations to solve for y

australopithecus · Answer

Problem explained

parthkohli · Answer

$\Large \color{purple}{\rightarrow y = -1 - 4x }$

By transposing the 2nd equation, I got this.

Now, we'd just replace y with -1 - 4x in the first equation. We get:

$\Large \color{purple}{\rightarrow 1.6x + 2(-1 - 4x) = 0 }$

Can you continue?

anonymous · Answer

um still consfused

lgbasallote · Answer

where?

anonymous · Answer

where do i put in the x?

lgbasallote · Answer

what do you mean x? do you get the first step? y = -1 - 4x?

anonymous · Answer

but i mean what is y its all over the place

anonymous · Answer

and no

parthkohli · Answer

Can you solve one-variable linear equations?

lgbasallote · Answer

okay let me explain it...

lgbasallote · Answer

as you can see you have two variables here right x and y?

anonymous · Answer

yes and then what

anonymous · Answer

no i cant solve one linear equations

lgbasallote · Answer

to make our lives easier, we would like to have only ONE variable. this is where "substitution" comes into play. basically, we "substitute" one of the variables into the other so there would only be one variable...got it?

anonymous · Answer

uhu