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erastova [34]
3 years ago
11

-7x +14y = -14 -3x +7y = -3

Mathematics
1 answer:
zzz [600]3 years ago
5 0

Answer:

[8, 3]

Step-by-step explanation:

-3⁄7[-7x + 14y = -14] ↷

{3x - 6y = 6

{-3x + 7y = -3

_____________

y = 3 [Plug this back into both equations to get an x-value of 8]; 8 = x

So, using the Elimination Method, I decided to eliminate the <em>x</em>'s by multiplying the top equation by -3⁄7 to end up with 3x, so I can cancel that with -3x in the bottom equation [<em>additive inverses</em> ALWAYS result in zero], and to be genuine, it really does not matter which variable you choose to eliminate.

If you are ever in need of assistance, do not hesitate to let me know by subscribing to my You-Tube channel [USERNAME: MATHEMATICS WIZARD], and as always, I am joyous to assist anyone at any time.

**I have a video that explains how to solve a system of equations in two to three variables. It is titled "Solving Systems of Equations". I encourage you to watch the video and gain alot more knowledge from it, so you can better understand the concept.

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Answer:

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Step-by-step explanation:

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That equation passes 2 points, which are represented in form of (x, y), (3, 7) and (6, 8).

Substitute these values of x and y into the original equation in step 1:

7 = 3M + b

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<em>Step 3: Solve the system of equations in step 2 for M</em>

Subtract 1st equation from 2nd equation:

8 - 7 = 6M - 3M + b - b

Simplify both sides:

1 = 3M

Divide both sides by 3:

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Hope this helps!

:)

8 0
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Step-by-step explanation:

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