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Aneli [31]
3 years ago
9

Solve the system using the method of you choice: -x + 4y = 12 5x - 2y = -6

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
7 0

Answer:

(0, 3)

Step-by-step explanation:

Let's first eliminate x.  To do this, multiply all three terms of the first equation by 5:  

-5x + 20y = 60

5x -    2y  = -6

----------------------

         18y = 54, so that y = 3.

Substituting 3 for y in the first equation yields:

-x + 4(3) = 12, or -x = 0.  Thus, x = 0, and the solution is

(0, 3)

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What is 4x-2y=8 and y=2x+1 using substitution
Setler [38]

Answer:

No Solution

Step-by-step explanation:

4x-2y=8

y=2x+1

Make the first equation into where it says y=.

-2y=-4x+8

y=2x-4

Substitute either equation into the other as y=.

2x+1=2x-4   or    2x-4=2x+1

Switch terms around so they're with their like terms. Make sure it becomes the opposite when switching.

2x-2x=-1-4    or    2x-2x=4+1

0=-5                     0=5

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8 0
3 years ago
What is the value of x in the equation –x = 2 – 3x + 6?
Aneli [31]

Answer:

x=4

Step-by-step explanation:

Let's solve your equation step-by-step.

−x=2−3x+6

Step 1: Simplify both sides of the equation.

−x=2−3x+6

−x=2+−3x+6

−x=(−3x)+(2+6)(Combine Like Terms)

−x=−3x+8

−x=−3x+8

Step 2: Add 3x to both sides.

−x+3x=−3x+8+3x

2x=8

Step 3: Divide both sides by 2.

2x/2 = 8/2

x=4    

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3 years ago
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